CVE-2011-3596

HIGHNVD 7.57.5—Weaponized

7.5

Polipo before 1.0.4.1 suffers from a DoD vulnerability via specially-crafted HTTP POST / PUT request.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 94.4%
KEV: Not listed

Published

November 26, 2019

Last Modified

November 21, 2024

References (8)

secalert@redhathttps://access.redhat.com/security/cve/cve-2011-3596
secalert@redhathttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=644289
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3596
secalert@redhathttps://security-tracker.debian.org/tracker/CVE-2011-3596
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/cve-2011-3596
af854a3a-2127-422b-91ae-364da2661108https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=644289
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3596
af854a3a-2127-422b-91ae-364da2661108https://security-tracker.debian.org/tracker/CVE-2011-3596

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-617

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
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2026-06-01 13:49 UTCepss_batch
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2026-05-29 13:41 UTCepss_batch
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2026-05-28 13:42 UTCepss_batch
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2026-05-27 13:38 UTCepss_batch
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2026-05-27 11:11 UTCEG score recompute
2026-05-27 11:11 UTCGHSA enrichment
2026-05-26 13:41 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-36198✓ verified
First seen Oct 1, 2011
Polipo 1.0.4.1 - POST/PUT HTTP Header Processing Denial of Service
Open source ↗

Frequently asked(5)

What is CVE-2011-3596?

CVE-2011-3596 is a high vulnerability published on November 26, 2019. Polipo before 1.0.4.1 suffers from a DoD vulnerability via specially-crafted HTTP POST / PUT request.

When was CVE-2011-3596 disclosed?

CVE-2011-3596 was first published in the National Vulnerability Database on November 26, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2011-3596 actively exploited?

CVE-2011-3596 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2011-3596?

CVE-2011-3596 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2011-3596?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-3596, 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.

Dependency Blast Radius

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CVE-2011-3596

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2011-3596?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)