Page generated: 07 Nov 2026, 04:22 UTC
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CVE-2026-97848

A flaw was found in the token sanitization logic of Keycloak, an open source identity and access management solution. The issue occurs when a protocol mapper is configured to emit structured claims using the JSON type. The security check designed to remove unauthorized role mappi…

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A flaw was found in the token sanitization logic of Keycloak, an open source identity and access management solution. The issue occurs when a protocol mapper is configured to emit structured claims using the JSON type. The security check designed to remove unauthorized role mappings only looks for standard Java maps and fails to recognize Jackson based JSON objects. This allows an attacker to inject forged client roles into security tokens, which could lead to unauthorized access to protected resources.
CVSS 6.5 (MEDIUM)

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
2.3–4.8/10
Missing inputs: range of priority

Evidence confidence: Insufficient evidence

Why this priority?
  • Technical severity: CVSS 6.5: +2.27

Fresh prediction unavailable

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 1 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Latest Vulnerabilities
Technical advisory · 06 Nov 2026, 06:16 · CVE-2026-97848 - Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization

Score evolution

● Hype   ● Reality

First record: hype 0.0 · reality 2.3 (2026-11-06 07:25). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs. Published 0 days ago. Exploitation evidence usually takes weeks to show up: a low reality score can mean there is no data yet, not that the flaw is mild.

Evidence in context

Confidence in exploitation evidence
Insufficient evidence
Priority basis
Exploitation in attacks unconfirmed; CVSS 6.5; fresh prediction unavailable
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, low privileges, no user interaction.
Observed activity
No exploitation observation is recorded.
Known scale
Not quantified.
Evidence confidence basis
Insufficient evidence

Score evaluated: 2026-11-06 07:25:57.352507+00:00 · EPSS snapshot: not available

Source event timeline
Published
06 Nov 2026, 06:03
Score calculated
06 Nov 2026, 07:25