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VulnerabilityPublished Updated

CVE-2026-62943: digint btrbk · OS Command Injection

Affects digint btrbkSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 0.32.7 soon.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 42% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.32.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 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 2 Nov 2026.

What to do

Upgrade btrbk and digint/btrbk to 0.32.7.

Affected software

ProductAffectedFixed in
digintbtrbkAffected
  • >=0.29.0 <0.32.7
Fixed in
  • 0.32.7
GitHubdigint/btrbkpkg:github/digint/btrbkOther threatsAffected
  • >=0.29.0 <0.32.7
Fixed in
  • 0.32.7

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

AI-suggested

Upgrade btrbk to version 0.32.7 or later where this vulnerability is fixed. If upgrading is not immediately possible, avoid using ssh_filter_btrbk.sh in authorized_keys to restrict SSH commands, as deployments not using this script are not affected.

Description

CVE-2026-62943 is an OS command injection vulnerability in the digint btrbk tool affecting versions from 0.29.0 up to but not including 0.32.7. The vulnerability arises because the ssh_filter_btrbk.sh script uses an allowlist pattern that lacks an end-of-string anchor, allowing a restricted SSH user to append additional commands and execute arbitrary commands with backup-target SSH account privileges. Deployments not using ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7.

References

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