# CVE-2022-25844: Regular Expression Denial of Service (ReDoS)

> Attackers can cause denial of service in Angular applications by exploiting a Regular Expression Denial of Service vulnerability in number formatting.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 May 2022
- **Updated:** 3 Nov 2025
- **Also known as:** CLSA-2026-1774052351, DEBIAN-CVE-2022-25844, GHSA-m2h2-264f-f486, MGASA-2023-0215, MINI-hc56-pmhp-686v, ROOT-APP-NPM-CVE-2022-25844, UBUNTU-CVE-2022-25844

## What is CVE-2022-25844?

CVE-2022-25844 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 1 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The package angular after 1.7.0 are vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value. **Note:** 1) This package has been deprecated and is no longer maintained. 2) The vulnerable versions are 1.7.0 and higher.

Weakness: CWE-1333 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2022-25844?

2 open source packages ship an affected version, including angular. It affects 3 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `angular` | npm | From 1.7.0 | None |
| `angular` | npm | From 1.7.0 | None |

Products: Angularjs Angularjs, Fedoraproject Fedora, Netapp Ontap Select Deploy Administration Utility.

## How do I fix CVE-2022-25844?

Product is end of life, replace it.

## Is CVE-2022-25844 being exploited?

There is no known exploitation of CVE-2022-25844 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2019-10768](https://insights.sbomify.com/CVE-2019-10768/): angular Prototype Pollution vulnerability (high 7.5)
- [CVE-2019-14863](https://insights.sbomify.com/CVE-2019-14863/): AngularJS Cross-site Scripting due to failure to sanitize `xlink.href` attributes (high 7.1)
- [CVE-2020-7676](https://insights.sbomify.com/CVE-2020-7676/): Angular vulnerable to Cross-site Scripting (medium 5.4)
- [CVE-2023-26116](https://insights.sbomify.com/CVE-2023-26116/): angular vulnerable to regular expression denial of service via the angular.copy() utility (medium 5.3)
- [CVE-2023-26117](https://insights.sbomify.com/CVE-2023-26117/): angular vulnerable to regular expression denial of service via the $resource service (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-25844 and fix it if it is affected.

What it is: CVE-2022-25844 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 1 May 2022. 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-2022-25844 in the wild and no public exploit code.

Affected packages and fixed versions:
- angular (npm): affected from 1.7.0; no fix listed
- angular (npm): affected from 1.7.0; no fix listed

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-2022-25844/ (Markdown: https://insights.sbomify.com/CVE-2022-25844/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-25844
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-25844
- OSV: https://osv.dev/vulnerability/CVE-2022-25844

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-25844/
Summaries are generated and may contain mistakes; the official description above is the record.