CVE-2026-34502 Apache Portable Runtime Utility: Heap buffer overflow in APR memcached client
Heap buffer overflow in the APR memcached client allows attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34502?
CVE-2026-34502 is a high-severity memory corruption vulnerability in Apache Portable Runtime Utility, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client
This issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3.
Weakness: CWE-122
Which versions are affected by CVE-2026-34502?
1 open source package ship an affected version, including apr-util. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apr-util Bitnami | From 1.3.0 | 1.6.5 |
Products include Apache Apr-Util.
How do I fix CVE-2026-34502?
Upgrade apr-util to 1.6.5 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-34502 being exploited?
There is no known exploitation of CVE-2026-34502 in the wild and no public exploit code.
Other vulnerabilities in Apache Portable Runtime Utility
- CVE-2009-2412 Integer overflow in n/a
- CVE-2026-32327 Apache Portable Runtime Utility: apr-util XML stack recursion crash
- CVE-2026-34191 Apache Portable Runtime Utility: SQL Injection in apr_dbd_oracle
- CVE-2025-49506 Apache Portable Runtime Utility: apr_password_validate() vulnerable to timing attack
- CVE-2026-34501 Apache Portable Runtime Utility: Heap buffer overflow in APR redis client
Sources
Also known as ALPINE-CVE-2026-34502, AZL-94637, BELL-CVE-2026-34502, BIT-apr-util-2026-34502, DEBIAN-CVE-2026-34502, ECHO-4808-fe1f-d864 and 2 more.