4.4

CVE-2011-2526: apache tomcat Improper Input Validation

Modified
AliasesGHSA-9ggm-7897-x4mg
Published 14-07-2011Last modified 06-08-2024

Vulnerability summary

CVE-2011-2526 is a medium (CVSS 4.4) Improper Input Validation vulnerability in apache tomcat. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 53.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.4, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.4/10
010
Medium · v2.0 (NVD)
EPSS score
0.70%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6
DSA-2401-1RHSA-2011:1780RHSA-2012:0074RHSA-2012:0076RHSA-2012:0680RHSA-2012:0682

Timeline

  1. 14-07-2011
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Apache Tomcat 5.5.x before 5.5.34, 6.x before 6.0.33, and 7.x before 7.0.19, when sendfile is enabled for the HTTP APR or HTTP NIO connector, does not validate certain request attributes, which allows local users to bypass intended file access restrictions or cause a denial of service (infinite loop or JVM crash) by leveraging an untrusted web application.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.70%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.70% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication (CVSS vector). Other conditions: not stated in public data.

Apache1 product
  • tomcatEOL5.5.0 | 5.5.1 | 5.5.2 | 5.5.3 | 5.5.4 | 5.5.5 | 5.5.6 | 5.5.7 | 5.5.8 | 5.5.9 | 5.5.10 | 5.5.11 | 5.5.12 | 5.5.13 | 5.5.14 | 5.5.15 | 5.5.16 | 5.5.17 | 5.5.18 | 5.5.19 | 5.5.20 | 5.5.21 | 5.5.22 | 5.5.23 | 5.5.24 | 5.5.25 | 5.5.26 | 5.5.27 | 5.5.28 | 5.5.29 | 5.5.30 | 5.5.31 | 5.5.32 | 5.5.33 | 6.0 | 6.0.0 | 6.0.1 | 6.0.2 | 6.0.3 | 6.0.4 | 6.0.5 | 6.0.6 | 6.0.7 | 6.0.8 | 6.0.9 | 6.0.10 | 6.0.11 | 6.0.12 | 6.0.13 | 6.0.14 | 6.0.15 | 6.0.16 | 6.0.17 | 6.0.18 | 6.0.19 | 6.0.20 | 6.0.24 | 6.0.26 | 6.0.27 | 6.0.28 | 6.0.29 | 6.0.30 | 6.0.31 | 6.0.32 | 7.0.0 | 7.0.0:beta | 7.0.1 | 7.0.2 | 7.0.3 | 7.0.4 | 7.0.5 | 7.0.6 | 7.0.7 | 7.0.8 | 7.0.9 | 7.0.10 | 7.0.11 | 7.0.12 | 7.0.14 | 7.0.17
Org.apache.tomcat1 product
  • tomcat< 5.5.34 | ≥ 6.0.0, < 6.0.33 | ≥ 7.0.0, < 7.0.19

2 vendors · 2 products

References

57 links
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