CVE Explorer

CVE-2026-49248

OneDev is a Git server with CI/CD, kanban, and packages. In versions 15.0.6 and below, TarUtils.untar() creates symbolic links verbatim from TAR entry getLinkName() without validating whether the target is an absolute path. A subsequent file entry in the same archive traverses the symlink, writing to arbitrary server-side locations. This is exploitable by any authenticated user with CI Job write access — no admin interaction required. This is an incomplete fix bypass of CVE-2021-21251 (GHSA-2w6j

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d233d663d981f36752bfc0b015c00a23d8a755092b479cb26f51c82ea4bbeb97

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"onedev","vendor":"theonedev","versions":[{"status":"affected","version":"< 15.0.7"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7e1f3ee6fc2c3f449b81a1b5c89a09003868bda161e0f8417c719327d4b22b21 · sha256:5742b5c1d7ba4f46… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7e1f3ee6fc2c3f449b81a1b5c89a09003868bda161e0f8417c719327d4b22b21 · sha256:5742b5c1d7ba4f46… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

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

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7e1f3ee6fc2c3f449b81a1b5c89a09003868bda161e0f8417c719327d4b22b21 · sha256:5742b5c1d7ba4f46… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/theonedev/onedev/commit/4f8684acebc4bfeefd3c7e23a34a4fd591cb27ad","tags":["x_refsource_MISC"],"url":"https://github.com/theonedev/onedev/commit/4f8684acebc4bfeefd3c7e23a34a4fd591cb27ad"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e1f3ee6fc2c3f449b81a1b5c89a09003868bda161e0f8417c719327d4b22b21 · sha256:5742b5c1d7ba4f46… · /containers/cna/references/1

{"name":"https://github.com/theonedev/onedev/security/advisories/GHSA-55g8-94r5-cj37","tags":["x_refsource_CONFIRM"],"url":"https://github.com/theonedev/onedev/security/advisories/GHSA-55g8-94r5-cj37"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7e1f3ee6fc2c3f449b81a1b5c89a09003868bda161e0f8417c719327d4b22b21 · sha256:5742b5c1d7ba4f46… · /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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