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CVE-2023-27159

58
FAUCET Score

CVE-2023-27159 is a Server-Side Request Forgery (SSRF) vulnerability affecting Appwrite up to version 1.2.1, specifically through the /v1/avatars/favicon component. This flaw allows unauthenticated attackers to access internal network resources and sensitive information by sending a specially crafted GET request. Rated with a CVSS score of 7.5 (High), it presents a low attack complexity and no user interaction, leading to high confidentiality impact. While not currently listed in CISA's KEV catalog, a Nuclei template exists for detection, and its EPSS score indicates a high likelihood of exploitation, despite a lack of public exploit code or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.1CPE matchmatch criteria
cpe:2.3:a:appwrite:appwrite:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
36.17%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2023-27159 · Apr 13, 2023
This CVE's current EPSS score of 0.3617 is in the 97th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

composerGHSA-hxgx-584x-vwm8high

Appwrite Server-Side Request Forgery vulnerability

Mar 31, 2023

References

gist.github.com / b33t1e/43b26c31e895baf7e7aea2dbf9743a9a
ExploitThird Party Advisory
gist.github.com / b33t1e/e9e8192317c111e7897e04d2f9bf5fdb
ExploitThird Party Advisory
github.com / appwrite/appwrite
Product
notes.sjtu.edu.cn / gMNlpByZSDiwrl9uZyHTKA
ExploitThird Party Advisory