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CVE-2021-45886

28
FAUCET Score

CVE-2021-45886 is a Cross-Site Request Forgery (CSRF) vulnerability affecting PONTON X/P Messenger versions prior to 3.11.2. The flaw stems from globally valid anti-CSRF tokens, allowing an attacker to use a low-privileged user's token to authorize actions for higher-privileged users. With a CVSS score of 8.8 (HIGH), this vulnerability has a network attack vector, low attack complexity, and can lead to high impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.8.0CPE matchmatch criteria
cpe:2.3:a:ponton:x\/p_messenger:3.8.0:*:*:*:*:*:*:*
3.10.0CPE matchmatch criteria
cpe:2.3:a:ponton:x\/p_messenger:3.10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 44th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ponton.de / products/xpmessenger
ProductVendor Advisory
syss.de / fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-080.txt
ExploitRelease NotesThird Party Advisory