What is CVE-2021-29467?

CVE-2021-29467 is a medium-severity vulnerability in Birb-Digital Wrongthink, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2021-04-22.

How severe is CVE-2021-29467?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Birb-Digital Wrongthink

CVE-2021-29467

Wrongthink is an encrypted peer-to-peer chat program. A user could check their fingerprint into the service and enter a script to run arbitrary JavaScript on the site. No workarounds exist, but a patch exists in version 2.4.1.

Published 2021-04-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (38.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Birb-Digital Wrongthink — versions < 2.4.1
Wrongthink Project

Weakness classification (CWE)

References

github.com/birb-digital/wrongthink/security/advisories/GHSA-529v-f2gf-62w9 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-29467?: CVE-2021-29467 is a medium-severity vulnerability in Birb-Digital Wrongthink, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2021-04-22.
How severe is CVE-2021-29467?: Medium severity. CVSS v3 base score is 6.1 out of 10.