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CVE-2018-1000822

29
FAUCET Score

CVE-2018-1000822 is a critical XML External Entity (XXE) vulnerability affecting codelibs fess versions prior to commit faa265b, specifically within its GSA XML file parser. This flaw allows attackers to craft malicious GSA XML files, leading to severe impacts such as confidential data disclosure, denial of service, Server-Side Request Forgery (SSRF), and port scanning. With a CVSS score of 10.0 (CRITICAL), the vulnerability is easily exploitable over the network with no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.2.3CPE matchmatch criteria
cpe:2.3:a:codelibs:fess:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

10.0CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.94%
Probability of exploitation in next 30 days
EPSS Percentile
78.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0194 is in the 66th percentile among its peer group of 36,835 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 (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.codelibs.fess:fessFixed in: 12.3.2

Vendor Advisories (1)

mavenGHSA-77hp-pfxw-4w63critical

XML External Entity (XXE) vulnerability in codelibs fess

Dec 20, 2018

References

0dd.zone / 2018/10/27/fess-XXE
Third Party Advisory
github.com / codelibs/fess/issues/1851
Issue TrackingPatchThird Party Advisory