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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-0549

20
FAUCET Score

CVE-2023-0549 is a cross-site scripting (XSS) vulnerability affecting YAFNET versions up to 3.1.10, specifically within the Private Message Handler component when processing the /forum/PostPrivateMessage file. An authenticated attacker can exploit this remotely by manipulating the subject or message arguments. Rated with a CVSS score of 5.4 (Medium), this vulnerability has a low attack complexity and requires user interaction, potentially leading to limited impact on confidentiality and integrity. While public exploit details are available, there is no evidence of active exploitation in the wild, nor are there Metasploit or Nuclei modules. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.1.0, <= 3.1.10CPE matchmatch criteria
cpe:2.3:a:yetanotherforum:yaf.net:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 83rd percentile among its peer group of 15,224 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

drive.google.com / drive/folders/1ct6Tp_cnsYO8L_JSvlBCf_Ae7KW3JAcD
ExploitThird Party Advisory
github.com / YAFNET/YAFNET/commit/2237a9d552e258a43570bb478a92a5505e7c8797
Patch
github.com / YAFNET/YAFNET/releases/tag/v3.1.11
Release Notes
github.com / YAFNET/YAFNET/security/advisories/GHSA-4hwx-678w-9cp5
ExploitThird Party Advisory
vuldb.com
Third Party Advisory
vuldb.com
Third Party Advisory