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CVE-2026-11854VulnerabilityPublished

The authentication endpoint generates an error message that includes reflected data directly from the request without

Source GCVE Database

0
Authoritative record:CVE-2026-11854· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium · fixed in 4.7.0.1 : update WSO2 API Manager when convenient.

Data as of 28 Oct 2026, 22:14 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 4.7.0.1, 4.6.0.29, 4.5.0.65 +15
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
WSO2WSO2 API ManagerAffected
  • >=4.7.0 <4.7.0.1
Fixed in
  • 4.7.0.1
WSO2WSO2 API ManagerAffected
  • >=4.6.0 <4.6.0.29
Fixed in
  • 4.6.0.29
WSO2WSO2 API ManagerAffected
  • >=4.5.0 <4.5.0.65
Fixed in
  • 4.5.0.65
WSO2WSO2 API ManagerAffected
  • >=4.4.0 <4.4.0.80
Fixed in
  • 4.4.0.80
WSO2WSO2 API ManagerAffected
  • >=4.3.0 <4.3.0.117
Fixed in
  • 4.3.0.117
WSO2WSO2 API ManagerAffected
  • >=4.2.0 <4.2.0.205
Fixed in
  • 4.2.0.205

AI-suggested

Mitigation may include implementing proper input sanitization and encoding on the authentication endpoint to prevent script injection.

Description

An authentication endpoint reflects unsanitized request data in error messages, enabling cross-site scripting (XSS) attacks. Attackers can inject malicious scripts executed in victims' browsers, potentially redirecting users, altering the page interface, or stealing information. Session hijacking is mitigated by the httpOnly flag on session cookies.

References

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