Nixpkgs Security Tracker

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Published issues

All published security issues are tracked and resolved on GitHub.

NIXPKGS-2026-0013
published on 16 Jan 2026
Permalink CVE-2026-0861
8.4 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): HIGH
  • Availability impact (A): HIGH
updated 2 months, 1 week ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed
    21 packages
    • tests.hardeningFlags-gcc.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags-clang.glibcxxassertionsStdenvUnsupp
    • tests.hardeningFlags-gcc.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags.allExplicitDisabledGlibcxxAssertions
    • tests.hardeningFlags-gcc.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-clang.glibcxxassertionsExplicitEnabled
    • tests.hardeningFlags-clang.glibcxxassertionsExplicitDisabled
    • tests.hardeningFlags-gcc.allExplicitDisabledGlibcxxAssertions
    • tests.hardeningFlags-clang.allExplicitDisabledGlibcxxAssertions
    • glibcLocalesUtf8
    • unixtools.getent
    • unixtools.locale
    • unixtools.getconf
    • getent
    • locale
    • iconv
    • mtrace
    • getconf
    • libiconv
    • glibcInfo
    • glibcLocales
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Integer overflow in memalign leads to heap corruption

Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign, aligned_alloc, valloc, pvalloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could consequently result in a heap corruption.

Affected products

glibc
  • =<2.42

Matching in nixpkgs

Package maintainers

https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0001
NIXPKGS-2026-0015
published on 16 Jan 2026
Permalink CVE-2026-0989
3.7 LOW
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): HIGH
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): NONE
  • Availability impact (A): LOW
updated 2 months, 1 week ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed
    8 packages
    • libxml2Python
    • sbclPackages.cl-libxml2
    • perlPackages.AlienLibxml2
    • python312Packages.libxml2
    • python313Packages.libxml2
    • perl538Packages.AlienLibxml2
    • perl540Packages.AlienLibxml2
    • tests.pkg-config.defaultPkgConfigPackages."libxml-2.0"
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Libxml2: unbounded relaxng include recursion leading to stack overflow

A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.

References

Affected products

rhcos
libxml2

Matching in nixpkgs

Package maintainers

Fix MR: https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/374
NIXPKGS-2026-0016
published on 16 Jan 2026
Permalink CVE-2026-0716
4.8 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): HIGH
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): LOW
  • Integrity impact (I): NONE
  • Availability impact (A): LOW
updated 2 months, 1 week ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed package tests.pkg-config.defaultPkgConfigPackages."libsoup-gnome-2.4"
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Libsoup: out-of-bounds read in libsoup websocket frame processing

A flaw was found in libsoup’s WebSocket frame processing when handling incoming messages. If a non-default configuration is used where the maximum incoming payload size is unset, the library may read memory outside the intended bounds. This can cause unintended memory exposure or a crash. Applications using libsoup’s WebSocket support with this configuration may be impacted.

Affected products

libsoup
libsoup3

Matching in nixpkgs

Package maintainers

Fix MR: https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/494
NIXPKGS-2026-0010
published on 13 Jan 2026
Permalink CVE-2025-14946
4.8 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): LOW
  • Privileges required (PR): LOW
  • User interaction (UI): REQUIRED
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): LOW
  • Integrity impact (I): LOW
  • Availability impact (A): LOW
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed
    3 packages
    • ocamlPackages.nbd
    • python312Packages.libnbd
    • python313Packages.libnbd
  • @LeSuisse removed maintainer @akshatagarwl
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Libnbd: libnbd: arbitrary code execution via ssh argument injection through a malicious uri

A flaw was found in libnbd. A malicious actor could exploit this by convincing libnbd to open a specially crafted Uniform Resource Identifier (URI). This vulnerability arises because non-standard hostnames starting with '-o' are incorrectly interpreted as arguments to the Secure Shell (SSH) process, rather than as hostnames. This could lead to arbitrary code execution with the privileges of the user running libnbd.

Affected products

libnbd
  • <1.22.5
  • <1.23.9
virt:rhel/libnbd
container-native-virtualization/virt-cdi-cloner
container-native-virtualization/virt-cdi-importer
container-native-virtualization/virt-cdi-operator
container-native-virtualization/virt-cdi-apiserver
container-native-virtualization/virt-cdi-controller
container-native-virtualization/virt-cdi-uploadproxy
container-native-virtualization/virt-cdi-cloner-rhel9
container-native-virtualization/virt-cdi-uploadserver
container-native-virtualization/virt-cdi-importer-rhel9
container-native-virtualization/virt-cdi-operator-rhel9
container-native-virtualization/virt-cdi-apiserver-rhel9
container-native-virtualization/virt-cdi-controller-rhel9
container-native-virtualization/virt-cdi-uploadproxy-rhel9
container-native-virtualization/virt-cdi-uploadserver-rhel9

Matching in nixpkgs

Package maintainers

Ignored maintainers (1)
https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/message/WTUYQOUVHYQVGER3G2AFWN3IYSIU3KTO/
NIXPKGS-2026-0009
published on 13 Jan 2026
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed
    2 maintainers
    • @fabaff
    • @vifino
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
wolfSSL Python library `CERT_REQUIRED` mode fails to enforce client certificate requirement

A vulnerability in the handling of verify_mode = CERT_REQUIRED in the wolfssl Python package (wolfssl-py) causes client certificate requirements to not be fully enforced.  Because the WOLFSSL_VERIFY_FAIL_IF_NO_PEER_CERT flag was not included, the behavior effectively matched CERT_OPTIONAL: a peer certificate was verified if presented, but connections were incorrectly authenticated when no client certificate was provided.  This results in improper authentication, allowing attackers to bypass mutual TLS (mTLS) client authentication by omitting a client certificate during the TLS handshake.  The issue affects versions up to and including 5.8.2.

Affected products

wolfssl
  • =<5.8.2

Matching in nixpkgs

pkgs.wolfssl

Small, fast, portable implementation of TLS/SSL for embedded devices

Package maintainers

Ignored maintainers (2)
NIXPKGS-2026-0011
published on 13 Jan 2026
Permalink CVE-2025-67554
5.9 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): HIGH
  • User interaction (UI): REQUIRED
  • Scope (S): CHANGED
  • Confidentiality impact (C): LOW
  • Integrity impact (I): LOW
  • Availability impact (A): LOW
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
WordPress Cookie Notice & Compliance for GDPR / CCPA plugin <= 2.5.8 - Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Humanityco Cookie Notice & Compliance for GDPR / CCPA cookie-notice allows Stored XSS.This issue affects Cookie Notice & Compliance for GDPR / CCPA: from n/a through <= 2.5.8.

Affected products

cookie-notice
  • =<<= 2.5.8

Matching in nixpkgs

NIXPKGS-2026-0012
published on 13 Jan 2026
Permalink CVE-2025-59030
7.5 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): NONE
  • Availability impact (A): HIGH
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor

An attacker can trigger the removal of cached records by sending a NOTIFY query over TCP.

Affected products

pdns-recursor
  • <5.1.9
  • <5.3.3
  • <5.2.7

Matching in nixpkgs

Package maintainers

Upstream advisory: https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-08.html
NIXPKGS-2026-0007
published on 11 Jan 2026
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed package pretix-banktool
  • @mweinelt accepted
  • @LeSuisse removed maintainer @mweinelt
  • @LeSuisse published on GitHub
Limited HTML injection in emails

Emails sent by pretix can utilize placeholders that will be filled with customer data. For example, when {name} is used in an email template, it will be replaced with the buyer's name for the final email. If the name of the attendee contained HTML or Markdown formatting, this was rendered as HTML in the resulting email. This way, a user could inject links or other formatted text through a maliciously formatted name. Since pretix applies a strict allow list approach to allowed HTML tags, this could not be abused for XSS or similarly dangerous attack chains. However, it can be used to manipulate emails in a way that makes user-provided content appear in a trustworthy and credible way, which can be abused for phishing.

Affected products

pretix
  • <2025.7.0
  • <2025.8.0
  • <2025.10.0
  • <2025.9.0

Matching in nixpkgs

Package maintainers

Ignored maintainers (1)
fbad460b426553178200c2c13d3c3ffef3db61dd (unstable)
d367441a2a542b46bcd8966f654045b7054f5d39 (25.11)
95c90c7122daae516db39fffda5bb4e13dd9161e (25.05)
NIXPKGS-2026-0006
published on 11 Jan 2026
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
rofl0r/proxychains-ng <= 4.17 Stack-based Buffer Overflow

rofl0r/proxychains-ng versions up to and including 4.17 and prior to commit cc005b7 contain a stack-based buffer overflow vulnerability in the function proxy_from_string() located in src/libproxychains.c. When parsing crafted proxy configuration entries containing overly long username or password fields, the application may write beyond the bounds of fixed-size stack buffers, leading to memory corruption or crashes. This vulnerability may allow denial of service and, under certain conditions, could be leveraged for further exploitation depending on the execution environment and applied mitigations.

Affected products

proxychains-ng
  • ==commit cc005b7
  • =<4.17

Matching in nixpkgs

pkgs.proxychains-ng

Preloader which hooks calls to sockets in dynamically linked programs and redirects it through one or more socks/http proxies

Package maintainers

Patch: https://github.com/httpsgithu/proxychains-ng/commit/cc005b7132811c9149e77b5e33cff359fc95512e
NIXPKGS-2026-0008
published on 11 Jan 2026
updated 2 months, 2 weeks ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed package pretix-banktool
  • @LeSuisse removed maintainer @mweinelt
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Insecure direct object reference

Multiple API endpoints allowed access to sensitive files from other users by knowing the UUID of the file that were not intended to be accessible by UUID only.

Affected products

pretix
  • <2025.9.0
  • <2025.8.0
  • <2025.10.0
  • <2025.11.0

Matching in nixpkgs

Package maintainers

Ignored maintainers (1)
https://github.com/NixOS/nixpkgs/pull/472420 (Unstable)
https://github.com/NixOS/nixpkgs/pull/472424 (25.11)