CVE-2026-83531: Red Hat Arbitrary code execution via untrusted expression injection
This Red Hat advisory covers CVE-2026-83531.
Key facts
- Vendor rating
- High, CVSS 8.8
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H· base score 8.8, scored by apacheAttack vector: network. Attack complexity: low. Privileges required: low. User interaction: none. Scope: unchanged. Confidentiality impact: high. Integrity impact: high. Availability impact: high.- Weakness
- CWE-94 Improper Control of Generation of Code ('Code Injection')
- CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
- EPSS
- 0.85% chance of exploitation in the next 30 days (58th percentile). FIRST EPSS, .
- CISA SSVC
- Exploitation: none observed. Automatable: no. Technical impact: total. CISA, .
- CISA KEV
- Not listed (catalogue checked )
- Versions named
- < 4.4.0; < 4.18.5; < 4.19.0 and 3 more below
- Fixed in
- 4.23.0, 4.22, 4.22.1 and 2 more below
- Source published
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Related products & platforms
Description
Arbitrary code execution via untrusted expression injection. Red Hat rates this important (CVSS 8.8).
Weakness: CWE-917.
Text from the source record.
- < 4.4.0
- < 4.18.5
- < 4.19.0
- < 4.22.1
- < 4.14.x
- 4.14
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-83531
Upgrade to a fixed release named by Red Hat:
- 4.23.0
- 4.22
- 4.22.1
- 4.18
- 4.18.5
CVE-2026-83531 in other vendors' advisories
- Apache: CVE-2026-83531, high severity, fixed in 4.18.5, 4.22.1, 4.23.0 and 1 more
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