CVE-2020-11976 — By crafting a special URL it is possible to make Wicket deliver unprocessed HTML

By crafting a special URL it is possible to make Wicket deliver unprocessed HTML templates. This would allow an attacker to see possibly sensitive information inside a HTML template that is usually removed during rendering. Affected are Apache Wicket versions 7.16.0, 8.8.0 and 9.

01What is this vulnerability?

By crafting a special URL it is possible to make Wicket deliver unprocessed HTML templates. This would allow an attacker to see possibly sensitive information inside a HTML template that is usually removed during rendering. Affected are Apache Wicket versions 7.16.0, 8.8.0 and 9.0.0-M5

02Affected products

Vendor	Product	Versions
n	a / Apache Wicket	Apache Wicket 7.16.0, 8.8.0, 9.0.0-M5

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: 2020-08-11T18:15:51.000Z
• Last modified: 2024-08-04T11:48:57.562Z

09References

• lists.apache.org — https://lists.apache.org/thread.html/r104eeefeb1e9da51f7ef79cef0f9ff12e21ef8559b…
• lists.apache.org — https://lists.apache.org/thread.html/rd0f36b83cc9f28b016ec552f023fb5a59a9ea8db56…
• lists.apache.org — https://lists.apache.org/thread.html/r982c626dbce5c995223c4a6ddd7685de3592f8d65b…
• lists.apache.org — https://lists.apache.org/thread.html/r05340178680eb6b9d4d40d56b5621dd4ae9715e6f4…
• lists.apache.org — https://lists.apache.org/thread.html/reb7ea8141c713b5b19eaf34c00f43aaebf5a1c1161…
• lists.apache.org — https://lists.apache.org/thread.html/rd26cae6e30b205e09e4b511d3d962d4f677c0c604f…
• lists.apache.org — https://lists.apache.org/thread.html/rdec0a43afdca59c10416889e07267f3d2fdf4ab929…
• lists.apache.org — https://lists.apache.org/thread.html/re4af65851bf69605cfb68be215eba36d4cdc1a90b9…