CVE-2026-51808 Memory corruption in n/a
A buffer overflow in the OpenHTJ2K decoder allows attackers to execute arbitrary code via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-51808?
CVE-2026-51808 is a critical memory corruption vulnerability in n/a, published on 14 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the openhtj2k_decoder_impl::invoke, invoke_line_based, invoke_line_based_stream, and invoke_line_based_predecoded function in source/core/interface/decoder.cpp
Weakness: CWE-120
Which versions are affected by CVE-2026-51808?
How do I fix CVE-2026-51808?
No fix has been published for CVE-2026-51808 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-51808 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-51808 exists.
Sources
Also known as GHSA-rqpx-m8w5-7hj9.