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VulnerabilityPublished

CVE-2026-64855: hitoshyamamoto soapbar · Improper Certificate Validation

Affects hitoshyamamoto soapbarSource CVE Database V5

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Not known to be exploited · CVSS 8.2 High : upgrade to 0.13.0 soon.

Data as of 11 Nov 2026, 16:04 UTC

CVSS 3.1 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.18.2
Patch
Available – fixed in 0.13.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 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 11 Nov 2026.

What to do

Upgrade hitoshyamamoto soapbar to 0.13.0.

Affected software

ProductAffectedFixed in
hitoshyamamotosoapbarAffected
  • <0.13.0
Fixed in
  • 0.13.0

AI-suggested

Upgrade soapbar to version 0.13.0 or later, where the verify_envelope_bsp() function properly validates certificates with a trusted CA chain and other checks. No additional mitigation is required once patched.

Description

A vulnerability in the soapbar Python SOAP library prior to version 0.13.0 allows improper certificate validation in the verify_envelope_bsp() function. This function trusted the certificate embedded in the message without validating the certificate chain or issuer, enabling attackers to forge signatures and bypass authentication. The issue was fixed in version 0.13.0.

References

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