# CVE-2026-93314: Freedesktop Poppler FoFiTrueType.cc mapCodeToGID integer overflow

> An integer overflow in Poppler's TrueType font processing allows remote attackers to cause denial of service or potentially execute code via crafted PDF files.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 18 Sep 2026
- **Updated:** 22 Sep 2026
- **Also known as:** DEBIAN-CVE-2026-93314, ECHO-6f38-4ab4-57a4, GHSA-2g5c-g4rf-f9jv, UBUNTU-CVE-2026-93314

## What is CVE-2026-93314?

CVE-2026-93314 is a medium-severity vulnerability in Freedesktop Poppler, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability was determined in Freedesktop Poppler 26.07.0. This affects the function FoFiTrueType::mapCodeToGID of the file fofi/FoFiTrueType.cc. Executing a manipulation of the argument segCnt can lead to integer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This patch is called ed2a5538cf0a8d3ff908191eda9b73f91a5f952a. It is advisable to implement a patch to correct this issue.

Weakness: CWE-190 (Integer Overflow or Wraparound), CWE-189

## Which versions are affected by CVE-2026-93314?


## How do I fix CVE-2026-93314?

Apply the vendor's patch.

## Is CVE-2026-93314 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93314 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-93314 and fix it if it is affected.

What it is: CVE-2026-93314 is a medium-severity vulnerability in Freedesktop Poppler, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93314 exists.

Affected product: Freedesktop Poppler. 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-2026-93314/ (Markdown: https://insights.sbomify.com/CVE-2026-93314/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-93314
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93314
- OSV: https://osv.dev/vulnerability/CVE-2026-93314

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-93314/
Summaries are generated and may contain mistakes; the official description above is the record.