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CVE-2026-8640VulnerabilityPublished

IBM Security Verify Directory 10.0.0 through 10.0.4 and IBM Verify Directory 11.0.0 does not set the SameSite

Source GCVE Database

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Authoritative record:CVE-2026-8640· Low 3.5

Not known to be exploited · CVSS 3.5 Low.

Data as of 9 Nov 2026, 00:20 UTC

CVSS 3.1 base score
3.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ibm)CVSS 3.13.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 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 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
IBMSecurity Verify DirectoryAffected
  • >=10.0.0 <=10.0.4
Fixed in–
IBMVerify DirectoryAffected
  • =11.0.0
Fixed in–

AI-suggested

Since the SameSite attribute is a cookie configuration, administrators should consider configuring session cookies to include the SameSite attribute to mitigate CSRF risks. Monitor vendor advisories for any official updates or patches.

Description

IBM Security Verify Directory versions 10.0.0 through 10.0.4 and 11.0.0 do not set the SameSite attribute on session cookies. This omission makes the application vulnerable to Cross-Site Request Forgery (CSRF) attacks, where an attacker could trick authenticated users into sending unauthorized requests. The vulnerability has a low severity score and does not impact confidentiality or availability.

References

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