01 Record
CVE-2026-54167
Pipelines-as-Code GitHub App token request can be redirected via untrusted Enterprise Host header
HighPUBLISHEDCNA: GitHub_M
CNA base score8.2 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
02 Description
Pipelines-as-Code GitHub App token request can be redirected via untrusted Enterprise Host header
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.26% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 18.8% of scored records. A rank, not a probability.
- NVD base score
- 8.2 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-09-30.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-15 14:29Z1 MO AGO
- Last updated
- 2026-09-15 14:49Z1 MO AGO
- Reserved
- 2026-06-11
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.2)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- Weaknesses
- CWE-345Insufficient Verification of Data AuthenticityClass
- Data version
- 5.2
- Document digest
- 3450b7560e471c9ef9e4555136171ceef9d8c14794bd786d3cade3073e572ecd
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/tektoncd/pipelines-as-code/security/advisories/GHSA-f5f4-3hh4-f54m
- github.comhttps://github.com/tektoncd/pipelines-as-code/commit/402d5c7eeece881cb082ec68e9e8b61709e39ace
- github.comhttps://github.com/tektoncd/pipelines-as-code/commit/40813976a77920feaf52671320d6d3c5ff08eb7e
- github.comhttps://github.com/tektoncd/pipelines-as-code/commit/ac6fded6dfb69ade7197d4eeed6e90ddbe1b79bc
- github.comhttps://github.com/tektoncd/pipelines-as-code/commit/e0c4a11ea3800ab9d26cf3a8ae92b74cf18527c3
- github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.37.8
- github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.39.6
- github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.42.1
- github.comhttps://github.com/tektoncd/pipelines-as-code/releases/tag/v0.48.0