Nixpkgs Security Tracker

Login with GitHub

Published issues

All published security issues are tracked and resolved on GitHub.

NIXPKGS-2026-0014
published on 16 Jan 2026
updated 1 month 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: libxml2: denial of service via crafted xml catalogs

A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.

Affected products

rhcos
libxml2

Matching in nixpkgs

Package maintainers

Fix MR: https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/368
NIXPKGS-2026-0009
published on 13 Jan 2026
updated 1 month, 1 week 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-2026-0010
published on 13 Jan 2026
updated 1 month, 1 week 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-2026-0012
published on 13 Jan 2026
updated 1 month, 1 week 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-2026-0011
published on 13 Jan 2026
updated 1 month, 1 week 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-2026-0002
published on 11 Jan 2026
updated 1 month, 1 week ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
wb2osz/direwolf <= 1.8 Stack-based Buffer Overflow DoS

wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 694c954, contain a stack-based buffer overflow vulnerability in the function kiss_rec_byte() located in src/kiss_frame.c. When processing crafted KISS frames that reach the maximum allowed frame length (MAX_KISS_LEN), the function appends a terminating FEND byte without reserving sufficient space in the stack buffer. This results in an out-of-bounds write followed by an out-of-bounds read during the subsequent call to kiss_unwrap(), leading to stack memory corruption or application crashes. This vulnerability may allow remote unauthenticated attackers to trigger a denial-of-service condition.

Affected products

direwolf
  • =<1.8
  • =<1.8.1
  • ==commit 694c954

Matching in nixpkgs

pkgs.direwolf

Soundcard Packet TNC, APRS Digipeater, IGate, APRStt gateway

Package maintainers

Patch: https://github.com/wb2osz/direwolf/commit/694c95485b21c1c22bc4682703771dec4d7a374b
NIXPKGS-2026-0006
published on 11 Jan 2026
updated 1 month, 1 week 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-2026-0001
published on 11 Jan 2026
updated 1 month, 1 week ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed package qtscrcpy
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Genymobile/scrcpy <= 3.3.3 Global Buffer Overflow

Genymobile/scrcpy versions up to and including 3.3.3 and prior to commit 3e40b24 contain a global buffer overflow vulnerability in the function sc_read32be, invoked via sc_device_msg_deserialize() and process_msgs(). Processing crafted device messages can cause reads beyond the bounds of a global buffer, leading to memory corruption or crashes. This vulnerability can be exploited to cause a denial of service and, under certain conditions, may be leveraged for further exploitation depending on the execution environment and available mitigations.

Affected products

scrcpy
  • ==commit 3e40b24
  • =<3.3.3

Matching in nixpkgs

pkgs.scrcpy

Display and control Android devices over USB or TCP/IP

Package maintainers

Patch: https://github.com/Genymobile/scrcpy/commit/3e40b2473772cea3a23d4932088fd0bc4cc0f52c

Fixed in 3.3.4 https://github.com/Genymobile/scrcpy/releases/tag/v3.3.4
NIXPKGS-2026-0003
published on 11 Jan 2026
updated 1 month, 1 week ago by @LeSuisse Activity log
  • Created automatic suggestion
  • @LeSuisse removed maintainer @SuperSandro2000
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Wget2: gnu wget2: memory corruption and crash via filename sanitization logic with attacker-controlled urls

A flaw was found in GNU Wget2. This vulnerability, a stack-based buffer overflow, occurs in the filename sanitization logic when processing attacker-controlled URL paths, particularly when filename restriction options are active. A remote attacker can exploit this by providing a specially crafted URL, which, upon user interaction with wget2, can lead to memory corruption. This can cause the application to crash and potentially allow for further malicious activities.

Affected products

wget2
  • ==2.2.1
  • =<2.2.0

Matching in nixpkgs

pkgs.wget2

Successor of GNU Wget, a file and recursive website downloader

Package maintainers

Ignored maintainers (1)
NIXPKGS-2026-0008
published on 11 Jan 2026
updated 1 month, 1 week 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)