| Name | CVE-2026-32327 |
| Description | A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function. Users are recommended to upgrade to version 1.6.4, which fixes this issue. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4742-1, DSA-6437-1 |
| Debian Bugs | 1143837 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| apr-util (PTS) | bullseye | 1.6.1-5+deb11u1 | vulnerable |
| bullseye (security) | 1.6.1-5+deb11u2 | fixed | |
| bookworm | 1.6.3-1 | vulnerable | |
| bookworm (security) | 1.6.3-1+deb12u1 | fixed | |
| trixie | 1.6.3-3 | vulnerable | |
| trixie (security) | 1.6.3-3+deb13u1 | fixed | |
| forky, sid | 1.6.4-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| apr-util | source | bullseye | 1.6.1-5+deb11u2 | DLA-4742-1 | ||
| apr-util | source | bookworm | 1.6.3-1+deb12u1 | DLA-4742-1 | ||
| apr-util | source | trixie | 1.6.3-3+deb13u1 | DSA-6437-1 | ||
| apr-util | source | (unstable) | 1.6.4-1 | 1143837 |
https://lists.apache.org/thread/hq27vj8yfno9tkwv0fpj6jksfzgxvth1
Fixed by: https://github.com/apache/apr-util/commit/414e12e427c89f135d8ee66ab1203feffd3e2bd8 (1.6.4-rc1-candidate)