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TI-2026-36445 Aliases CVE-2026-49248

OneDev: RCE through absolute-path symlink following allows low-privileged users to…

Priority MEDIUM 43CWE-61Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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-wc8c-9mq2): that patch blocked .. path segments but did not address absolute symlink targets. This issue has been fixed in version 15.0.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0057 47th percentileScored 2026-11-07
Fix Fixed onedev (theonedev): 15.0.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
theonedevonedevbefore 15.0.715.0.7Patch availableCNA
  • onedev Vendortheonedev Affected before 15.0.7 Fixed in 15.0.7 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:onedev_project:onedev:*:*:*:*:*:*:*:*——theonedev
  • cpe:2.3:a:onedev_project:onedev:*:*:*:*:*:*:*:* Versions — — ·theonedev

Remediation

  • Fix · CNA onedev (theonedev) Fixed in 15.0.7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49248

References

Other 2

  • TI-2021-04345 Pre-Auth Unsafe Deserialization on AttachmentUploadServet CVSS 3.1CRITICAL 10.0
  • TI-2022-18585 CI/CD Docker Escape in OneDev CVSS 3.1CRITICAL 9.9
  • TI-2022-18584 Access Control Bypass in Onedev CVSS 3.1CRITICAL 9.8
  • TI-2021-04346 Pre-Auth Unsafe Deserialization on KubernetesResource CVSS 3.1CRITICAL 10.0
  • TI-2022-18587 Git Repository Disclosure in Onedev CVSS 3.1HIGH 7.5
  • TI-2021-04349 Pre-Auth Access token leak CVSS 3.1HIGH 8.6
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences