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CVE-2026-24047

Backstage is an open framework for building developer portals, and @backstage/cli-common provides config loading functionality used by the backend and command line interface of Backstage. Prior to version 0.1.17, the `resolveSafeChildPath` utility function in `@backstage/backend-plugin-api`, which is used to prevent path traversal attacks, failed to properly validate symlink chains and dangling symlinks. An attacker could bypass the path validation via symlink chains (creating `link1 → link2 → /
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dcac31e79e3aa921ef7c3633c7f892b30f55381a306dfb77f99598c8205e0575
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-61","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"backstage","vendor":"backstage","versions":[{"status":"affected","version":"< 0.1.17"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-59","description":"CWE-59: Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-61","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/backstage/backstage/commit/ae4dd5d1572a4f639e1a466fd982656b50f8e692","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/commit/ae4dd5d1572a4f639e1a466fd982656b50f8e692"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/references/1
{"name":"https://github.com/backstage/backstage/security/advisories/GHSA-2p49-45hj-7mc9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/backstage/backstage/security/advisories/GHSA-2p49-45hj-7mc9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a9e31811932dced4b55dd56c5ef8e231c92f6fd39ecc5d75d33c5819e59d1cd · sha256:482cc9dda28de223… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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