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CVE-2025-54800

Hydra persistent XSS in build metrics

Published: Aug 12, 2025Updated: Sep 22, 2025 Sources: CVE List NVDCWE-79
NVD MITRE
6.1CVSSMEDIUM
EPSS Score
0.2%
Top 91.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Hydra is a continuous integration service for Nix based projects. Prior to commit dea1e16, a malicious package can introduce arbitrary JavaScript code into the Hydra database that is automatically evaluated in a client's browser when anyone visits the build page. This could be done by a third-party project as part of its build process. This also happens in other places like with hydra-release-name. This issue has been patched by commit dea1e16. A workaround involves either not building untrusted packages or not visiting the builds page.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

hydraNixOS
On-prem
Operating Systems / linux-distro
hydranixos
On-prem
Operating Systems / linux-distro
nixososs-projectOperating Systems

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/NixOS/hydra/security/advisories/GHSA-7qwg-q53v-vh99
github.com
https://github.com/NixOS/hydra/commit/dea1e168f590efb27db32dbacc82b09e15f8ae4b
github.com

Timeline

Published
Aug 12, 2025
Last Updated
Sep 22, 2025

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