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CVE-2026-23794

24
FAUCET Score

CVE-2026-23794 describes a reflected Cross-Site Scripting (XSS) vulnerability in the Enduser Login page of Apache Syncope, affecting versions 3.0 through 3.0.15 and 4.0 through 4.0.3. An attacker could exploit this by tricking a legitimate user into clicking a malicious link, potentially leading to the theft of their credentials upon login. The vulnerability has a CVSS score of 6.8 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and resulting in high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE. Users are advised to upgrade to Apache Syncope 3.0.16 or 4.0.4 to remediate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 3.0.16CPE matchmatch criteria
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.4CPE matchmatch criteria
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 43rd percentile among its peer group of 15,239 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 (3)

mavenpatch availablevia ghsa
Product: org.apache.syncope.client.idrepo:syncope-client-idrepo-common-uiFixed in: 3.0.16
mavenpatch availablevia ghsa
Product: org.apache.syncope.client.idrepo:syncope-client-idrepo-common-uiFixed in: 4.0.4
apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

mavenGHSA-v84m-gfw5-hm2wmedium

Apache Syncope: Reflected XSS on Enduser Login

Feb 3, 2026
apacheapache:www.mail-archive.com/[email protected]/msg10692.html

CVE-2026-23794: Apache Syncope: Reflected XSS on Enduser Login

Feb 2, 2026

References

openwall.com / lists/oss-security/2026/02/02/1
Mailing ListThird Party Advisory
lists.apache.org / thread/7h30ghqdsf3spl3h7gdmscxofrm8ygjo
Mailing ListThird Party Advisory