01 Record
CVE-2026-115923
Backstage catalog rules can be bypassed for URL locations using encoded path segments
MediumPUBLISHEDCNA: GitHub_M
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
02 Description
Backstage catalog rules can be bypassed for URL locations using encoded path segments
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.31% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 24.5% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-26.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
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
- 2026-10-26 17:56Z2 DAYS AGO
- Last updated
- 2026-10-26 17:56Z2 DAYS AGO
- Reserved
- 2026-10-23
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
- Data version
- 5.2
- Document digest
- d2c79578e7092d0e41efc9efd8ef72aafa8928500a67379c424a2600a3c4f52a
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/backstage/backstage/security/advisories/GHSA-w658-mh9p-ww8f
- github.comhttps://github.com/backstage/backstage/commit/3214dc8f15d4a08a2fd07a72a8fe4d00aeac0db4
- github.comhttps://github.com/backstage/backstage/commit/737ff1c719dbd5a97f375b7f1db6d61416618419
- github.comhttps://github.com/backstage/backstage/releases/tag/v1.54.10
- github.comhttps://github.com/backstage/backstage/releases/tag/v1.56.1