Process crash via oversized HTTP chunk length
Published Sep 9, 2026 · Updated Sep 9, 2026
Out-of-bounds read in GPAC 26.07.0 allows context-dependent attackers to crash the process through a crafted chunked HTTP response. gf_dm_get_chunk_data accepts a 0xFFFFFFFF chunk length, after which unsigned addition wraps in gf_dm_data_received and an oversized memcpy reads beyond its source buffer. Exploitation requires a user to load attacker-served content or a man-in-the-middle attacker to modify plaintext HTTP; the demonstrated consequence is process termination without data disclosure.
Summary
What happened
Out-of-bounds read in GPAC 26.07.0 allows context-dependent attackers to crash the process through a crafted chunked HTTP response. gf_dm_get_chunk_data accepts a 0xFFFFFFFF chunk length, after which unsigned addition wraps in gf_dm_data_received and an oversized memcpy reads beyond its source buffer. Exploitation requires a user to load attacker-served content or a man-in-the-middle attacker to modify plaintext HTTP; the demonstrated consequence is process termination without data disclosure.
The record
- CVE
- CVE-2026-79514
- Published
- Sep 9, 2026
- Updated
- Sep 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 9, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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
- poc_malicious_http_server.pyfunctional · demonstrated
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Technologies
Your stack
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Your stack
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