# CVE-2026-58014: Glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list"

> An off-by-one error in GLib's key file parser allows out-of-bounds access, potentially causing a denial of service.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Jun 2026
- **Updated:** 29 Oct 2026
- **Also known as:** AZL-91445, BELL-CVE-2026-58014, DEBIAN-CVE-2026-58014, ECHO-cd39-6531-4266, GHSA-h88q-m8mm-7243, JLSEC-2026-1247, MINI-xj99-27mv-gc6h, ROOT-OS-ALPINE-323-CVE-2026-58014, ROOT-OS-DEBIAN-11-CVE-2026-58014, ROOT-OS-DEBIAN-12-CVE-2026-58014, UBUNTU-CVE-2026-58014

## What is CVE-2026-58014?

CVE-2026-58014 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 30 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_list function in the gkeyfile.c file when loading a key file with an empty value. This flaw can cause an out-of-bounds access of 1 byte or a denial of service when the out-of-bounds access crosses a page boundary.

Weakness: CWE-193 (Off-by-one Error)

## Which versions are affected by CVE-2026-58014?

It affects 2 products.


Products: Gnome Glib, Redhat Enterprise Linux.

## How do I fix CVE-2026-58014?

Apply the vendor's patch.

## Is CVE-2026-58014 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58014 exists.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2020-35457](https://insights.sbomify.com/CVE-2020-35457/): Integer overflow in n/a (high 7.8)
- [CVE-2009-3289](https://insights.sbomify.com/CVE-2009-3289/): Privilege escalation in n/a (high 7.8)
- [CVE-2025-13601](https://insights.sbomify.com/CVE-2025-13601/): Glib: integer overflow in in g_escape_uri_string() (high 7.7)
- [CVE-2026-58016](https://insights.sbomify.com/CVE-2026-58016/): Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml" (high 7.5)
- [CVE-2025-4056](https://insights.sbomify.com/CVE-2025-4056/): Glib: glib crash after long command line (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-58014 and fix it if it is affected.

What it is: CVE-2026-58014 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 30 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58014 exists.

Affected product: Redhat Enterprise Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-58014/ (Markdown: https://insights.sbomify.com/CVE-2026-58014/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-58014
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-58014
- OSV: https://osv.dev/vulnerability/CVE-2026-58014

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-58014/
Summaries are generated and may contain mistakes; the official description above is the record.