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CVE-2023-49733

29
FAUCET Score

CVE-2023-49733 is a critical Improper Restriction of XML External Entity Reference (XXE) vulnerability affecting Apache Cocoon versions from 2.2.0 prior to 2.3.0. This flaw carries a CVSS score of 9.8 (Critical), indicating it can be exploited remotely with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered significant community discussion with over 10 mentions, suggesting awareness among security researchers. Users are strongly advised to upgrade to Apache Cocoon version 2.3.0 to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.2.0, < 2.3.0CPE matchmatch criteria
cpe:2.3:a:apache:cocoon:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 54th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: org.apache.cocoon:cocoonFixed in: 2.3.0

Vendor Advisories (1)

mavenGHSA-77jg-cpw9-73vgcritical

Apache Cocoon Improper Restriction of XML External Entity Reference vulnerability

Nov 30, 2023

References

lists.apache.org / thread/t87nntzt6dxw354zbqr9k7l7o1x8gq11
Mailing ListVendor Advisory
openwall.com / lists/oss-security/2023/11/30/5
Mailing List