Appwrite Server-Side Request Forgery vulnerability

published 2023-03-31 3 y ago modified 2026-07-09 4 mo ago also GHSA-hxgx-584x-vwm8 , EUVD-2023-1042

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 36.4%; EPSS 36.4% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known, plus a Nuclei check

Appwrite up to v1.2.1 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /v1/avatars/favicon. This vulnerability allows attackers to access network resources and sensitive information via a crafted GET request.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 20 mo ago (2025-02-18)

Exploit prediction

36.42% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template Appwrite <=1.2.1 - Server-Side Request Forgery nuclei detection template
notes.sjtu.edu.cn https://notes.sjtu.edu.cn/gMNlpByZSDiwrl9uZyHTKA referenced PoC, tagged "exploit" by a source, unverified
gist.github.com https://gist.github.com/b33t1e/e9e8192317c111e7897e04d2f9bf5fdb referenced PoC, tagged "exploit" by a source, unverified
gist.github.com https://gist.github.com/b33t1e/43b26c31e895baf7e7aea2dbf9743a9a referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	appwrite/server-ce	<=1.2.1	no fix listed

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

notes.sjtu.edu.cn /gMNlpByZSDiwrl9uZyHTKA
web, exploit, third-party-advisory
gist.github.com /b33t1e/e9e8192317c111e7897e04d2f9bf5fdb
web, exploit, third-party-advisory
gist.github.com /b33t1e/43b26c31e895baf7e7aea2dbf9743a9a
web, exploit, third-party-advisory
github.com /appwrite/appwrite
package, product
nvd.nist.gov /vuln/detail/CVE-2023-27159
advisory
appwrite.com
web

Sources

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