Appwrite Browser Screenshot Service Get.php PublicHostname server-side request forgery

published 2026-10-11 28 d ago modified 2026-10-13 26 d ago also EUVD-2026-97127

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 3

n/a Appwrite 2.4.0

github.com/appwrite/appwrite@393255e commit
github.com/appwrite/appwrite#13995 pull request
github.com/appwrite/appwrite/releases/tag/2.4.0 release

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 26 d ago (2026-10-13)

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

vuldb.com https://vuldb.com/submit/958017 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	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
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
CNA	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
CNA	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N/E:ND/RL:OF/RC:C
CNA	4.0	6.9	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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

n/a Appwrite

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

github.com /appwrite/appwrite/pull/13995
issue-tracking, patch
github.com /appwrite/appwrite/commit/393255e7302ae5503331d45802e2eee01c6a47fe
patch
github.com /appwrite/appwrite/releases/tag/2.4.0
patch
vuldb.com /submit/958017
third-party-advisory, exploit
vuldb.com /vuln/416552
vdb-entry, technical-description
vuldb.com /vuln/416552/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-108770
third-party-advisory
github.com /godzeo/vulhub/issues/2
broken-link, issue-tracking
github.com /appwrite/appwrite/
product

Sources

CVE List CVE-2026-108770
NVD CVE-2026-108770

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary