CVE-2026-55772
CedarJava type-confusion via reserved map keys enables authorization bypass.
Is CVE-2026-55772 being exploited?
Not confirmed. CVE-2026-55772 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.48% probability of exploitation in the next 30 days.
How severe is CVE-2026-55772?
CVE-2026-55772 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-55772?
Yes. A fix has been recorded for CVE-2026-55772. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-55772 affect?
CVE-2026-55772 affects CedarJava <2.3.6, <3.4.1, <4.9.0, Apps using CedarJava that build CedarMap from untrusted input. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-55772?
Upgrade to 2.3.6 / 3.4.1 / 4.9.0 and validate or reject reserved keys (__entity, __extn).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authorization bypass/privilege escalation: attacker-controlled CedarMap keys cause records to be treated as entity refs, bypassing policy checks.
Immediate action required
- affected< 2.3.6
- affected>= 3.1.2 and < 3.4.1
- affected>= 4.0.0 and < 4.9.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.