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CVE-2026-39822VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Amazon · Golang Go: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen

Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database

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Authoritative record:CVE-2026-39822· High 7.8

Not known to be exploited · CVSS 7.8 High : upgrade to 1.26.5 soon.

Data as of 12 Nov 2026, 11:23 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.26.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Upgrade github.com/golang/go to 1.26.5.

Affected software

ProductAffectedFixed in
Gogithub.com/golang/gopkg:golang/github.com/golang/goOther threatsAffected
  • <1.26.5
Fixed in
  • 1.26.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in Go version 1.26.5. Users should update to this version or later to remediate the vulnerability. Red Hat users should apply the relevant security updates as described in the advisory RHSA-2026:38493. No additional mitigation actions are indicated by the vendor.

Description

A directory traversal vulnerability exists in the Go programming language's os.Root function due to symlink following, allowing potential information disclosure. This affects Go versions prior to 1.26.5. The issue has been fixed in version 1.26.5. The vulnerability is rated as important by Red Hat in their advisory for the buildah package, which uses Go. No known exploits are reported in the wild.

References

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