openssl_encrypt before 1.4.9 Denial of Service via Unbounded Argon2
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
openssl_encrypt before 1.4.9 fails to validate the memory_cost parameter from identity file protection blocks, allowing attackers to trigger out-of-memory conditions during key derivation. Attackers with write access to local identity stores can craft malicious identity files with excessive memory_cost values that cause the host to crash when unlocking identities before authentication.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA openssl_encrypt (jahlives) Fixed in 1.4.9
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
jahlives openssl_encrypt 1.4.9
36 records Highest priority Priority MEDIUM 24 MEDIUM, 12 LOW
Other records, highest priority first
- TI-2026-56361 openssl_encrypt before 1.4.9 ANSI Escape Injection via Identity EmailPriority MEDIUM 49
- TI-2026-56355 openssl_encrypt before 1.4.9 Arbitrary Code Execution via unsigned pluginPriority MEDIUM 48
- TI-2026-56354 openssl_encrypt before 1.4.9 GPG Signature Verification BypassPriority MEDIUM 48
Timeline
- 2026-10-02 Threatist record created from CVE-2026-81720
- 2026-10-03 Alias added: GHSA-92rj-569v-9vqg
References
More jahlives Openssl Encrypt vulnerabilities
- TI-2026-52616 openssl_encrypt before 1.4.0 Sandbox Escape via Type Hierarchy CVSS 4.0CRITICAL 9.3
- TI-2026-52615 openssl_encrypt before 1.4.0 Sandbox Escape via Dunder Attribute Traversal CVSS 4.0CRITICAL 9.3
- TI-2026-52602 openssl_encrypt before 1.4.0 Sandbox Bypass via pathlib and io CVSS 4.0HIGH 8.7
- TI-2026-52617 openssl_encrypt before 1.4.0 Weak Shared Secret via PQC Simulation Mode CVSS 4.0CRITICAL 9.3
- TI-2026-52614 openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation CVSS 4.0CRITICAL 9.3
- TI-2026-52613 openssl_encrypt before 1.4.0 Authentication Bypass via Bearer Token CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-81720 · CVE Program
- CVE-2026-81720 · NVD
- FIRST EPSS
- GHSA-92rj-569v-9vqg · GitHub Advisory Database · CC BY 4.0
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