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VulnerabilityPublished

CVE-2025-13736: WSO2 Identity Server as Key Manager · Information Disclosure Through Error Messages

Affects WSO2 Identity Server as Key ManagerSource CVE Database V5

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Not known to be exploited · CVSS 3.7 Low : upgrade to 5.10.0.371 when convenient.

Data as of 5 Nov 2026, 23:23 UTC

CVSS 3.1 base score
3.7Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.10.0.371, 7.2.0.2, 7.1.0.40 +10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Aug 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 5 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
WSO2WSO2 Identity Server as Key ManagerAffected
  • >=5.10.0 <5.10.0.371
Fixed in
  • 5.10.0.371
WSO2WSO2 Identity ServerAffected
  • >=7.2.0 <7.2.0.2
Fixed in
  • 7.2.0.2
WSO2WSO2 Identity ServerAffected
  • >=7.1.0 <7.1.0.40
Fixed in
  • 7.1.0.40
WSO2WSO2 Identity ServerAffected
  • >=7.0.0 <7.0.0.132
Fixed in
  • 7.0.0.132
WSO2WSO2 Identity ServerAffected
  • >=6.1.0 <6.1.0.255
Fixed in
  • 6.1.0.255
WSO2WSO2 Identity ServerAffected
  • >=6.0.0 <6.0.0.254
Fixed in
  • 6.0.0.254

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, organizations should consider disabling Multi-Attribute Login if feasible or implementing additional monitoring and rate limiting to reduce the risk of username enumeration attacks.

Description

CVE-2025-13736 is an information disclosure vulnerability in WSO2 Identity Server as Key Manager version 5.10.0. When Multi-Attribute Login is enabled, the login interface reveals whether a username exists by displaying the canonical username for valid users and echoing the original input for invalid users. This behavior occurs regardless of the validate_username configuration setting. The vulnerability can aid attackers in enumerating valid usernames, increasing the risk of brute force, social engineering, and phishing attacks.

References

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