Gwolle Guestbook Plugin cross site scriting

published 2022-06-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11096

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

A vulnerability was found in Gwolle Guestbook Plugin 1.7.4. It has been rated as problematic. This issue affects some unknown processing. The manipulation leads to basic cross site scripting. The attack may be initiated remotely.

CISA SSVC

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

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

seclists.org http://seclists.org/bugtraq/2017/Mar/1 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 Gwolle Guestbook 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 /bugtraq/2017/Mar/1
exploit, mailing-list, third-party-advisory
vuldb.com /?id.97379
third-party-advisory, vdb-entry

Sources

CVE List CVE-2017-20089
NVD CVE-2017-20089

Fencer Intel 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