November 14, 2026

CVE Watchtower

CVE-2026-123540OpenIdentityPlatform OpenAM Improper Encoding or Escaping of Output

NVD

Vulnerability Summary

OpenAM before 16.1.4 contains an incomplete output encoding vulnerability that allows a SAML 1.x identity provider to alter attribute values by injecting unencoded content into the service provider auto-submitted form. Attackers controlling a trusted identity provider can craft assertion attribute names or values that reach the target application in modified form, undermining the integrity of received attributes.
Severity Level
LOW(2.0)
Published Date
Nov 8, 2026
Last Modified
Nov 12, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.18%Probability
Root Weakness (CWE)
CWE-116: Improper Encoding or Escaping of Output ↗
The product prepares a structured message for communication with another component, but encoding or escaping of the data is missing or incorrect.
CVSS v4.0 Base Metrics — Score 2.0 (LOW)
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityHigh
Attack RequirementsPresent
Privileges RequiredHigh
User InteractionPassive
Confidentiality (Vulnerable System)None
Integrity (Vulnerable System)Low
Availability (Vulnerable System)None
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 2.0)
CVSS v3.1 Base Metrics — Score 2.0 (LOW)
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

Affected & Patched Versions

Affected Versions
  • OpenIdentityPlatform OpenAM < 16.1.4
Patched Versions
  • OpenIdentityPlatform OpenAM 16.1.4

What to do

Fix it during your normal patch cycle. No exploitation is confirmed yet.

  1. Check whether you run OpenIdentityPlatform OpenAM and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 8, 2026Published
  • Nov 12, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 03:11 UTC