TrueConf Server Stored cross site scripting

Published 4 y ago 2022-06-29 · modified 4 mo ago 2026-06-17 · JSON

CVSS

3.5

v3.1 · CNA

CISA KEV

not known exploited

EPSS

0.6%

percentile 50%

Public exploits

none known

A vulnerability, which was classified as problematic, was found in TrueConf Server 4.3.7. This affects an unknown part. The manipulation leads to basic cross site scripting (Stored). It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

CISA SSVC assessment

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

Exploit prediction (EPSS)

0.62% probability of exploitation in the next 30 days, higher than 50% of all scored CVEs.

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`
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	5.4	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`
NVD	2.0	3.5	`AV:N/AC:M/Au:S/C:N/I:P/A:N`

Affected products

TrueConf Server

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

References

exploit-db.com /exploits/41184/ · x_refsource_MISC, x_transferred
vuldb.com /?id.96627 · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2017-20113
NVD: CVE-2017-20113

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary