WP-SpamFree Anti-Spam Plugin cross site scriting

published 2022-06-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11103

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

A vulnerability classified as problematic has been found in WP-SpamFree Anti-Spam Plugin 2.1.1.4. This affects an unknown part. The manipulation leads to basic cross site scripting. It is possible to initiate the attack remotely.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-14)

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

seclists.org http://seclists.org/fulldisclosure/2017/Feb/79 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

unspecified WP-SpamFree Anti-Spam Plugin

Classification

Weakness

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page
CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

seclists.org /fulldisclosure/2017/Feb/79
exploit, mailing-list, third-party-advisory
vuldb.com /?id.97371
third-party-advisory

Sources

CVE List CVE-2017-20096
NVD CVE-2017-20096

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