CVE-2026-18212Disclosure

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was found in the SAML Redirect Binding implementation of Keycloak, an open-source identity and access management solution. The issue occurs because the custom DEFLATE compression and decompression helpers fail to release native zlib memory after use. An unauthenticated attacker can exploit this by sending repeated malformed SAML requests, leading to native memory exhaustion and a denial of service.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-401

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Full discourse1 post

Cloud-IAM@cloud_iam_com46d
Disclosure
CVE-2026-18212 (7.5): A helper in the SAML Redirect Binding implementation does not release native memory after use. Sending repeated malformed SAML requests could lead to native memory exhaustion and a denial of service.
Post summary
CVE-2026-18212 is announced as a 7.5-severity DoS vulnerability in SAML Redirect Binding caused by native memory not being released after use, with technical details disclosed but no PoC, exploit, or patch mentioned.
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