CVE-2026-49248

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.3
EG Score
8.3(medium)
EPSS
30.3%
KEV
Not listed

Published

June 18, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 18, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Absolute-path symlink following in TarUtils.untar allows low-privileged users to overwrite arbitrary server files leading to RCE · Advisory · theonedev/onedev · GitHub

https://github.com/theonedev/onedev/security/advisories/GHSA-55g8-94r5-cj37
github_commit Patch Available

commit 4f8684acebc4 (theonedev/onedev)

Patch available: theonedev/onedev v15.0.7 (contains commit 4f8684acebc4)

https://github.com/theonedev/onedev/commit/4f8684acebc4bfeefd3c7e23a34a4fd591cb27ad

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 66× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 16:27 UTCEG score recompute
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-11 04:53 UTCEG score recompute
  4. 2026-07-10 17:20 UTCEG score recompute
  5. 2026-07-10 05:47 UTCEG score recompute
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-09 18:14 UTCEG score recompute
  8. 2026-07-09 06:40 UTCEG score recompute
  9. 2026-07-08 19:07 UTCEG score recompute
  10. 2026-07-08 15:16 UTCEPSS rescore
  11. 2026-07-08 07:23 UTCEG score recompute
  12. 2026-07-07 19:50 UTCEG score recompute
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-07 07:05 UTCEG score recompute
  15. 2026-07-06 19:01 UTCEG score recompute
  16. 2026-07-06 16:27 UTCEPSS rescore
  17. 2026-07-06 06:27 UTCEG score recompute
  18. 2026-07-06 02:23 UTCEPSS rescore
  19. 2026-07-05 18:53 UTCEG score recompute
  20. 2026-07-05 07:20 UTCEG score recompute
  21. 2026-07-04 19:44 UTCEG score recompute
  22. 2026-07-04 08:10 UTCEG score recompute
  23. 2026-07-04 06:31 UTCEPSS rescore
  24. 2026-07-03 20:38 UTCEG score recompute
  25. 2026-07-03 09:04 UTCEG score recompute
Show 41 more
  1. 2026-07-02 21:30 UTCEG score recompute
  2. 2026-07-02 09:57 UTCEG score recompute
  3. 2026-07-01 22:24 UTCEG score recompute
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 10:34 UTCEG score recompute
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-30 22:58 UTCEG score recompute
  8. 2026-06-30 11:25 UTCEG score recompute
  9. 2026-06-29 23:50 UTCEG score recompute
  10. 2026-06-29 12:12 UTCEG score recompute
  11. 2026-06-29 00:38 UTCEG score recompute
  12. 2026-06-28 14:07 UTCEPSS rescore
  13. 2026-06-28 13:05 UTCEG score recompute
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-28 01:31 UTCEG score recompute
  17. 2026-06-27 13:57 UTCEG score recompute
  18. 2026-06-27 03:08 UTCEPSS rescore
  19. 2026-06-27 02:22 UTCEG score recompute
  20. 2026-06-26 14:47 UTCEG score recompute
  21. 2026-06-26 02:59 UTCEG score recompute
  22. 2026-06-25 15:25 UTCEG score recompute
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-25 03:52 UTCEG score recompute
  25. 2026-06-24 16:19 UTCEG score recompute
  26. 2026-06-24 14:05 UTCEPSS rescore
  27. 2026-06-24 04:46 UTCEG score recompute
  28. 2026-06-23 21:33 UTCEPSS rescore
  29. 2026-06-23 21:33 UTCEPSS rescore
  30. 2026-06-23 17:12 UTCEG score recompute
  31. 2026-06-23 05:39 UTCEG score recompute
  32. 2026-06-22 18:03 UTCEG score recompute
  33. 2026-06-22 06:29 UTCEG score recompute
  34. 2026-06-21 18:55 UTCEG score recompute
  35. 2026-06-21 07:20 UTCEG score recompute
  36. 2026-06-20 19:43 UTCEG score recompute
  37. 2026-06-20 08:06 UTCEG score recompute
  38. 2026-06-19 20:31 UTCEG score recompute
  39. 2026-06-19 08:58 UTCEG score recompute
  40. 2026-06-18 21:24 UTCEG score recompute
  41. 2026-06-18 21:23 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-49248?
CVE-2026-49248 is a high vulnerability published on June 18, 2026. 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…
When was CVE-2026-49248 disclosed?
CVE-2026-49248 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49248 actively exploited?
CVE-2026-49248 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-49248?
CVE-2026-49248 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-49248?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49248, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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