# CVE-2023-26930: Denial of service in n/a

> An attacker can cause a denial of service in XPDF via a buffer overflow in the pdftotext function, though the vendor considers this an expected abort.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 26 Apr 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-g4vj-r7jx-86jx

## What is CVE-2023-26930?

CVE-2023-26930 is a medium-severity denial of service vulnerability in Xpdfreader Xpdf, published on 26 Apr 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Buffer Overflow vulnerability found in XPDF v.4.04 allows an attacker to cause a Denial of Service via the PDFDoc malloc in the pdftotext.cc function. NOTE: Vendor states “it's an expected abort on out-of-memory error.”

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-26930?

It affects 1 product.


Products: Xpdfreader Xpdf.

## How do I fix CVE-2023-26930?

No fix has been published for CVE-2023-26930 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-26930 being exploited?

There is no known exploitation of CVE-2023-26930 in the wild and no public exploit code.

## Other vulnerabilities in Xpdfreader Xpdf

- [CVE-2022-38928](https://insights.sbomify.com/CVE-2022-38928/): Null dereference in n/a (high 7.8)
- [CVE-2022-38222](https://insights.sbomify.com/CVE-2022-38222/): Use after free in n/a (high 7.8)
- [CVE-2022-33108](https://insights.sbomify.com/CVE-2022-33108/): Memory corruption in n/a (high 7.8)
- [CVE-2022-30524](https://insights.sbomify.com/CVE-2022-30524/): Memory corruption in n/a (high 7.8)
- [CVE-2020-24996](https://insights.sbomify.com/CVE-2020-24996/): Memory corruption in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-26930 and fix it if it is affected.

What it is: CVE-2023-26930 is a medium-severity denial of service vulnerability in Xpdfreader Xpdf, published on 26 Apr 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-26930 in the wild and no public exploit code.

Affected product: Xpdfreader Xpdf. 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-2023-26930/ (Markdown: https://insights.sbomify.com/CVE-2023-26930/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-26930
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-26930
- OSV: https://osv.dev/vulnerability/CVE-2023-26930

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-26930/
Summaries are generated and may contain mistakes; the official description above is the record.