How severe is CVE-2020-11976?

CVE-2020-11976 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-11976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11976?

CVE-2020-11976 primarily affects Apache Fortress. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-11976?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-11976 published?

CVE-2020-11976 was published on 2020-08-11 and last updated on 2026-06-17.

CVE-2020-11976

CVE-2020-11976 is a high-severity vulnerability in Apache Fortress with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-552.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-552
Affected product: Apache Fortress
Published: 2020-08-11
Last modified: 2026-06-17

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

Frequently asked questions

What is 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
How severe is CVE-2020-11976?: CVE-2020-11976 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-11976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11976?: CVE-2020-11976 primarily affects Apache Fortress. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-11976?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-11976 published?: CVE-2020-11976 was published on 2020-08-11 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:apache:fortress:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:wicket:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:wicket:9.0.0:milestone1:*:*:*:*:*:*
cpe:2.3:a:apache:wicket:9.0.0:milestone2:*:*:*:*:*:*
cpe:2.3:a:apache:wicket:9.0.0:milestone3:*:*:*:*:*:*
cpe:2.3:a:apache:wicket:9.0.0:milestone4:*:*:*:*:*:*
cpe:2.3:a:apache:wicket:9.0.0:milestone5:*:*:*:*:*:*

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