CVE-2026-56153 Apache HTTP Server: mod_charset_lite: Heap overflow in finish_partial_char
An out-of-bounds write in Apache HTTP Server's mod_charset_lite allows attackers to cause memory corruption, potentially leading to code execution or service crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-56153?
CVE-2026-56153 is a high-severity memory corruption vulnerability in Apache Http Server, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
Weakness: CWE-787
Which versions are affected by CVE-2026-56153?
1 open source package ship an affected version, including apache. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache Bitnami | From 2.4.0 | 2.4.69 |
Products include Apache Http Server.
How do I fix CVE-2026-56153?
Upgrade apache to 2.4.69 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-56153 being exploited?
There is no known exploitation of CVE-2026-56153 in the wild and no public exploit code.
Other vulnerabilities in Apache Http Server
Sources
Also known as ALPINE-CVE-2026-56153, AZL-106749, BELL-CVE-2026-56153, BIT-apache-2026-56153, CLSA-2026-1791292931, CLSA-2026-1791293022 and 9 more.