# CVE-2026-102505: Memory corruption in tonycoz:imager

> A heap buffer overflow in the Imager Perl library allows attackers to execute arbitrary code or cause denial of service via crafted paletted images.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Oct 2026
- **Updated:** 1 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-102505, GHSA-4rx6-cgv3-fmxp, UBUNTU-CVE-2026-102505

## What is CVE-2026-102505?

CVE-2026-102505 is a medium-severity memory corruption vulnerability in tonycoz:imager, published on 1 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Imager versions before 1.037 for Perl overflow a heap buffer fetching float samples from a paletted image in i_gsampf_fp.

For a paletted image, getsamples() with type "float" allocates a buffer of one sample per pixel and fetches every requested channel of each pixel into it. Requesting more than one channel writes past its end.

An attacker-supplied image controls the overflowing bytes through its palette.

Weakness: CWE-131 (Incorrect Calculation of Buffer Size)

## Which versions are affected by CVE-2026-102505?

It affects 1 product.


Products: Tonycoz Imager.

## How do I fix CVE-2026-102505?

Upgrade to a fixed version.

## Is CVE-2026-102505 being exploited?

There is no known exploitation of CVE-2026-102505 in the wild and no public exploit code.

## Other vulnerabilities in tonycoz:imager

- [CVE-2026-14454](https://insights.sbomify.com/CVE-2026-14454/): Imager versions before 1.033 for Perl treat unsigned EXIF IFD entry counts as signed (critical 9.8)
- [CVE-2026-102504](https://insights.sbomify.com/CVE-2026-102504/): Denial of service in tonycoz:imager (high 7.5)
- [CVE-2024-53901](https://insights.sbomify.com/CVE-2024-53901/): Memory corruption in n/a (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102505 and fix it if it is affected.

What it is: CVE-2026-102505 is a medium-severity memory corruption vulnerability in tonycoz:imager, published on 1 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-102505 in the wild and no public exploit code.

Affected product: tonycoz:imager. 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-2026-102505/ (Markdown: https://insights.sbomify.com/CVE-2026-102505/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102505
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102505
- OSV: https://osv.dev/vulnerability/CVE-2026-102505

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102505/
Summaries are generated and may contain mistakes; the official description above is the record.