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CVE-2005-4836

21
FAUCET Score

CVE-2005-4836 describes a vulnerability in Apache Tomcat versions 4.1.15 through 4.1.40, where the HTTP/1.1 connector fails to properly handle NULL bytes in URLs when allowLinking is enabled. This flaw allows unauthenticated remote attackers to bypass security restrictions and read sensitive JSP source files. With a CVSS score of 7.8, this vulnerability is considered high severity due to its network-based attack vector and critical impact on confidentiality, though it has no impact on integrity or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.15CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:4.1.15:*:*:*:*:*:*:*
4.1.16CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:4.1.16:*:*:*:*:*:*:*
4.1.17CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:4.1.17:*:*:*:*:*:*:*
4.1.18CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:4.1.18:*:*:*:*:*:*:*
4.1.19CPE matchmatch criteria
cpe:2.3:a:apache:tomcat:4.1.19:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:C/I:N/A:N

Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.47%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0347 is in the 78th percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

mavenGHSA-qrcx-p4rr-g48hhigh

Apache Tomcat allows remote attackers to read JSP source files

May 1, 2022

References

lists.apache.org / thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E
tomcat.apache.org / security-4.html
securityfocus.com / bid/28483