5.4

CVE-2021-36551: tiki tikiwiki_cms\/groupware Cross-site Scripting

CVSS: 5.4v3.1MediumModified
Published 28-10-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-36551 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in tiki tikiwiki_cms\/groupware. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (NVD)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 28-10-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

TikiWiki v21.4 was discovered to contain a cross-site scripting (XSS) vulnerability in the component tiki-calendar.php. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload under the Add Event module.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.50% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Xss Payload

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Tiki1 product

1 vendor · 1 product

References

1 links