Which products and versions are affected by CVE-2020-11991?

Affected: Cocoon (Apache) versions >= Apache Cocoon 2.1.0 to 2.1.12. The full list is in the CVE brief.

Is CVE-2020-11991 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.

Is CVE-2020-11991 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-11991?

No public exploit code is known.

Is there a fix for CVE-2020-11991?

Fixed versions are available, including Cocoon <=2.1.12, Cocoon 2.1.12.

How urgently should CVE-2020-11991 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2020-11991

Q: What is CVE-2020-11991?

When using the StreamGenerator, the code parse a user-provided XML.

Q: How urgently should CVE-2020-11991 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

HighExploited

When using the StreamGenerator, the code parse a user-provided XML.

Published Sep 11, 2020 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2020-11991 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Cocoon (Apache).
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023. No public exploit code is known.
EPSS estimates a 72% probability of exploitation in the next 30 days.
Fixed versions are available, including Cocoon <=2.1.12, Cocoon 2.1.12.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

72%

Higher than 99.4% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

None known

Get the full CVE-2020-11991 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

When using the StreamGenerator, the code parse a user-provided XML. A specially crafted XML, including external system entities, could be used to access any file on the server system.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Nov 25, 2023	n/a	Not reported
CIRCL KEV	Oct 14, 2023	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
CocoonApache	>= Apache Cocoon 2.1.0 to 2.1.12	2.1.12

Patched Releases

Cocoon

<=2.1.12

Timeline

Publicly disclosed
Sep 11, 2020
Added to CIRCL KEV
Oct 14, 2023
Added to Industry KEV feed
Nov 25, 2023
Last updated
Nov 21, 2024

Weakness Type

CWE-611 Improper Restriction of XML External Entity Reference

References

6 more references in the full CVE brief

FAQ

Common Questions.

When using the StreamGenerator, the code parse a user-provided XML.
Affected: Cocoon (Apache) versions >= Apache Cocoon 2.1.0 to 2.1.12. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Cocoon <=2.1.12, Cocoon 2.1.12.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2020-11991 Running On Your Attack Surface?

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