Memory exhaustion via unbounded FLAC sample count
Published Aug 27, 2026 · Updated Aug 27, 2026
Denial of service in jahlives OpenSSL Encrypt 1.4.8 and earlier allows remote attackers to exhaust memory via a crafted FLAC file. In _decode_flac_samples, the 36-bit STREAMINFO total_samples value is passed to np.random.randint as an array dimension without a payload-derived upper bound, and later copies amplify the allocation. Triggering requires the decrypt --stego-extract path to process an attacker-supplied FLAC carrier; the resulting allocation can terminate the process or host under memory pressure.
Summary
What happened
Denial of service in jahlives OpenSSL Encrypt 1.4.8 and earlier allows remote attackers to exhaust memory via a crafted FLAC file. In _decode_flac_samples, the 36-bit STREAMINFO total_samples value is passed to np.random.randint as an array dimension without a payload-derived upper bound, and later copies amplify the allocation. Triggering requires the decrypt --stego-extract path to process an attacker-supplied FLAC carrier; the resulting allocation can terminate the process or host under memory pressure.
The record
- CVE
- CVE-2026-81692
- Published
- Aug 27, 2026
- Updated
- Aug 27, 2026
- Vendor
- jahlives
- Product
- OpenSSL Encrypt
- Classifications
- CWE-789, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 27, 2026CVE publishedPublication date reported by the CVE source.
- Aug 27, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <1.4.9
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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