No exploitation reportedFix available

CVE-2020-11976

Q: Is CVE-2020-11976 actively exploited?

Active exploitation of CVE-2020-11976 has not been confirmed. Its EPSS score was 3.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-11976?

CVE-2020-11976 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2020-08-11
Fixed in8.9.0 · 7.17.0
WeaknessCWE-552

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC

2020-08-1119:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-11976?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-11976?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Apache wicket

Branch	Affected	Fixed in	Source
8.x	≥ 8.0.0, < 8.9.0	8.9.0	NVD
7.17	< 7.17.0	7.17.0	NVD
9.0	= 9.0.0	no fix published	NVD

Apache fortress

Branch	Affected	Fixed in	Source
2.0	= 2.0.5	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Apache wicket to 8.9.0 · 7.17.0

Advisories and patches

lists.apache.orgRelease Notes · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-552read 2026-10-23
FIRST EPSSEPSS score3.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2020-08-11
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-11976?

Is CVE-2020-11976 actively exploited?

Active exploitation of CVE-2020-11976 has not been confirmed. Its EPSS score was 3.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-11976?

CVE-2020-11976 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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