CVE-2011-2526

NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 1%CVSS: —Exploit: NoneExposed: 0

A fix is available — apply it.

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 v3
—
EG Score
0.0(none)
EG Risk
0
EG Risk 0/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses intrinsic severity with real-world exploitation and automatability, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. It is distinct from the 0–10 EG Score, which measures severity.

EPSS
49.3%
KEV
Not listed

Published

July 14, 2011

Last Modified

April 29, 2026

References (70)

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibtomcat6-java (6.0.32-5ubuntu1.1) @ oneiric2026-05-29ubuntu
redhattomcat6-0:6.0.32-24_patch_07.ep5.el62012-05-21redhat
redhatpatch2012-05-21redhat
redhattomcat5-0:5.5.33-28_patch_07.ep5.el62012-05-21redhat
redhatpatch2012-05-21redhat
redhatpatch2012-02-22redhat
redhatpatch2012-02-02redhat
redhatjbossweb-0:2.1.12-3_patch_03.2.ep5.el62012-01-31redhat
redhatpatch2012-01-31redhat
redhatpatch2012-01-31redhat
redhatpatch2012-01-31redhat
redhatpatch2012-01-19redhat
redhattomcat6-0:6.0.24-35.el6_12011-12-05redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.tomcat:tomcat—7.0.19—

All Vendor Advisories

(14)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 40× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 105 total refreshes for this CVE.

  1. 2026-07-23 01:05 UTCEG score recompute
  2. 2026-07-23 00:09 UTCEG score recompute
  3. 2026-07-22 21:47 UTCEG score recompute
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  59. 2026-05-29 07:32 UTCVendor advisory
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Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2011-2526?
CVE-2011-2526 is a none vulnerability published on July 14, 2011. 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…
When was CVE-2011-2526 disclosed?
CVE-2011-2526 was first published in the National Vulnerability Database on July 14, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-2526 actively exploited?
CVE-2011-2526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 49.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-2526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2526, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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