MonoCMS Posts Page opensaved.php cross site scripting

published 2024-11-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-33356

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits: 0; none known

A vulnerability was found in MonoCMS up to 20240528. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /monofiles/opensaved.php of the component Posts Page. The manipulation of the argument filtcategory/filtstatus leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-11-07)

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/secuserx/CVE/blob/main/%5BXSS%20vulnerability%5D%20found%20in%20MonoCMS%2023-20240528%20-%20(opensaved.php).md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CNA	3.0	3.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:P/A:N
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

n/a MonoCMS
monocms monocms

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

github.com /secuserx/CVE/blob/main/%5BXSS%20vulnerability%5D%20found%20in%20MonoCMS%2023-20240528%20-%20(opensaved.php).m
exploit, third-party-advisory
vuldb.com /?id.283327
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.283327
signature, permissions-required
vuldb.com /?submit.434189
third-party-advisory

Sources

CVE List CVE-2024-10928
NVD CVE-2024-10928

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