CVE-2022-4721 — Failure to Sanitize Special Elements into a Different Plane (Special Element Inj

Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in GitHub repository ikus060/rdiffweb prior to 2.5.5.

01What is this vulnerability?

Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in GitHub repository ikus060/rdiffweb prior to 2.5.5.

02Affected products

Vendor	Product	Versions
ikus060	ikus060/rdiffweb	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-23T00:00:00.000Z
• Last modified: 2025-04-09T20:40:39.894Z

09References

• huntr.dev — https://huntr.dev/bounties/3c48ef5d-da4d-4ee4-aaca-af65e7273720
• github.com — https://github.com/ikus060/rdiffweb/commit/6afaae56a29536f0118b3380d296c416aa6d0…