Nixpkgs security tracker
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CVE-2026-53758
8.7 HIGH
- CVSS version (CVSS): 4.0
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Attack Requirement (AT): None (N)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Vulnerable System Impact Confidentiality (VC): None (N)
- Vulnerable System Impact Integrity (VI): High (H)
- Vulnerable System Impact Availability (VA): None (N)
- Subsequent System Impact Confidentiality (SC): None (N)
- Subsequent System Impact Integrity (SI): None (N)
- Subsequent System Impact Availability (SA): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Attack Requirement (MAT): None (N)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Vulnerable System Impact Confidentiality (MVC): None (N)
- Modified Vulnerable System Impact Integrity (MVI): High (H)
- Modified Vulnerable System Impact Availability (MVA): None (N)
- Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
- Modified Subsequent System Impact Integrity (MSI): Negligible (N)
- Modified Subsequent System Impact Availability (MSA): Negligible (N)
- Safety (S): Not Defined (X)
- Automatable (AU): Not Defined (X)
- Recovery (R): Not Defined (X)
- Value Density (V): Not Defined (X)
- Vulnerability Response Effort (RE): Not Defined (X)
- Provider Urgency (U): Not Defined (X)
- Confidentiality Req. (CR): Not Defined (X)
- Integrity Req. (IR): Not Defined (X)
- Availability Req. (AR): Not Defined (X)
- Exploit Maturity (E): Not Defined (X)
by @LeSuisse Activity log
- Created suggestion
- @LeSuisse dismissed (not in Nixpkgs)
Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized
Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including <script> tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization, resulting in stored XSS visible to all site visitors. At time of publication, there are no publicly known patches.
References
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https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77 x_refsource_CONFIRM
Affected products
emlog
- ==<= 2.6.29
Package maintainers
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@mjm Matt Moriarity <matt@mattmoriarity.com>
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@K900 Ilya K. <me@0upti.me>
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@peterhoeg Peter Hoeg <peter@hoeg.com>
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@LunNova Luna Nova <nixpkgs-maintainer@lunnova.dev>
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@FRidh Frederik Rietdijk <fridh@fridh.nl>
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@bkchr Bastian Köcher <nixos@kchr.de>
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@SuperSandro2000 Sandro Jäckel <sandro.jaeckel@gmail.com>
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@nyanloutre Paul Trehiou <paul@nyanlout.re>
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@NickCao Nick Cao <nickcao@nichi.co>
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@ilya-fedin Ilya Fedin <fedin-ilja2010@ya.ru>