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CVE-2026-56305VulnerabilityPublished

Capgo before 12.128.2 contains an authentication bypass vulnerability in the password change endpoint that allows attackers to change user passwords without requiring current password confirmation

Affects capgoSource GCVE Database

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Not known to be exploited · CVSS 8.3 High : upgrade to 12.128.2 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
8.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 12.128.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 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 29 Oct 2026.

What to do

Upgrade cap-go/capgo to 12.128.2.

Affected software

ProductAffectedFixed in
GitHubcap-go/capgopkg:github/cap-go/capgoOther threatsAffected
  • <12.128.2
Fixed in
  • 12.128.2

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

AI-suggested

If you cannot patch yet, restrict session access and monitor for suspicious activity related to password changes.

Description

Capgo before 12.128.2 contains an authentication bypass vulnerability in the password change endpoint that allows attackers to change user passwords without requiring current password confirmation. Attackers with temporary session access can exploit this flaw to permanently lock out legitimate users and achieve full account takeover.

References

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