# CVE-2013-7491: Memory corruption in n/a

> Stack corruption in the Perl DBI module allows attackers to execute arbitrary code or cause denial of service via memory-intensive user-defined functions.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 11 Sep 2020
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2013-7491, GHSA-grmf-5xw5-9cmx

## What is CVE-2013-7491?

CVE-2013-7491 is a medium-severity memory corruption vulnerability in n/a, published on 11 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in the DBI module before 1.628 for Perl. Stack corruption occurs when a user-defined function requires a non-trivial amount of memory and the Perl stack gets reallocated.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2013-7491?

It affects 1 product.


Products: Perl Dbi.

## How do I fix CVE-2013-7491?

Upgrade to a fixed version.

## Is CVE-2013-7491 being exploited?

There is no known exploitation of CVE-2013-7491 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2026-14739](https://insights.sbomify.com/CVE-2026-14739/): Memory corruption in DBI (critical 9.8)
- [CVE-2026-10879](https://insights.sbomify.com/CVE-2026-10879/): DBI versions before 1.648 for Perl have a heap overflow when preparsing SQL statements with more than 9 binders (critical 9.8)
- [CVE-2026-14740](https://insights.sbomify.com/CVE-2026-14740/): DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an initial SQL comment (critical 9.1)
- [CVE-2026-14380](https://insights.sbomify.com/CVE-2026-14380/): DBI versions before 1.650 for Perl are vulnerable to code injection via caller-influenced Profile (high 8.8)
- [CVE-2026-9698](https://insights.sbomify.com/CVE-2026-9698/): DBI versions before 1.648 for Perl saved errors in a limited-sized buffer (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2013-7491 and fix it if it is affected.

What it is: CVE-2013-7491 is a medium-severity memory corruption vulnerability in n/a, published on 11 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2013-7491 in the wild and no public exploit code.

Affected product: n/a. 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-2013-7491/ (Markdown: https://insights.sbomify.com/CVE-2013-7491/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2013-7491
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2013-7491
- OSV: https://osv.dev/vulnerability/CVE-2013-7491

---
From sbomify Insights: https://insights.sbomify.com/CVE-2013-7491/
Summaries are generated and may contain mistakes; the official description above is the record.