CVE-2020-11976

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

Published: 2020-08-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-11976 is rated Moderate Risk (62.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.76%). EPSS rose +1.73% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-11976

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.03% 3.76% +1.73%
2 2025-11-21 2.36% 2.03% -0.33%
3 2025-11-18 — 2.36% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11976

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-11976

GitHub Security Advisory for CVE-2020-11976

GHSA-64gv-3pqv-299h · Severity: high · Ecosystem: maven — Exposure of Sensitive Information to an Unauthorized Actor in Apache Wicket

Affected software / configurations for CVE-2020-11976

Vendor Product Version Raw CPE
apache fortress 2.0.5 cpe:2.3:a:apache:fortress:2.0.5:*:*:*:*:*:*:*
apache wicket < 7.17.0 cpe:2.3:a:apache:wicket:*:*:*:*:*:*:*:*
apache wicket >= 8.0.0, < 8.9.0 cpe:2.3:a:apache:wicket:*:*:*:*:*:*:*:*
apache wicket 9.0.0 cpe:2.3:a:apache:wicket:9.0.0:milestone1:*:*:*:*:*:*
apache wicket 9.0.0 cpe:2.3:a:apache:wicket:9.0.0:milestone2:*:*:*:*:*:*
apache wicket 9.0.0 cpe:2.3:a:apache:wicket:9.0.0:milestone3:*:*:*:*:*:*
apache wicket 9.0.0 cpe:2.3:a:apache:wicket:9.0.0:milestone4:*:*:*:*:*:*
apache wicket 9.0.0 cpe:2.3:a:apache:wicket:9.0.0:milestone5:*:*:*:*:*:*

References for CVE-2020-11976

URL Tags
https://lists.apache.org/thread.html/r05340178680eb6b9d4d40d56b5621dd4ae9715e6f41f12ae2288ec49%40%3Cdev.directory.apache.org%3E
https://lists.apache.org/thread.html/r104eeefeb1e9da51f7ef79cef0f9ff12e21ef8559b77801e86b21e16%40%3Cusers.wicket.apache.org%3E Mailing List Release Notes Vendor Advisory
https://lists.apache.org/thread.html/r982c626dbce5c995223c4a6ddd7685de3592f8d65ba8372da1f3ce19%40%3Cdev.directory.apache.org%3E
https://lists.apache.org/thread.html/rd0f36b83cc9f28b016ec552f023fb5a59a9ea8db56f2b9dcc6a2f6b7%40%3Ccommits.directory.apache.org%3E
https://lists.apache.org/thread.html/rd26cae6e30b205e09e4b511d3d962d4f677c0c604f737997ce1b2f22%40%3Cdev.directory.apache.org%3E
https://lists.apache.org/thread.html/rdec0a43afdca59c10416889e07267f3d2fdf4ab929a6e22a2659b6ff%40%3Cdev.directory.apache.org%3E
https://lists.apache.org/thread.html/re4af65851bf69605cfb68be215eba36d4cdc1a90b95fbc894799d923%40%3Cdev.directory.apache.org%3E
https://lists.apache.org/thread.html/reb7ea8141c713b5b19eaf34c00f43aaebf5a1c116130f763c42bdad1%40%3Cdev.directory.apache.org%3E
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