Mort Bay Jetty 6.x through 6.1.22 and 7.0.0 writes backtrace data without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator, related to (1) a string value in the Age parameter to the default URI for the Cookie Dump Servlet in test-jetty-webapp/src/main/java/com/acme/CookieDump.java under cookie/, (2) an alphabetic value in the A parameter to jsp/expr.jsp, or (3) an alphabetic value in the Content-Length HTTP header to an arbitrary application.
CVE-2009-4611
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 3%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 86.5%
- KEV
- Not listed
Published
January 13, 2010
Last Modified
April 23, 2026
References (6)
- cve@mitrehttp://www.securityfocus.com/archive/1/508830/100/0/threaded
- cve@mitrehttp://www.ush.it/team/ush/hack-jetty6x7x/jetty-adv.txt
- cve@mitrehttp://www.ush.it/team/ush/hack_httpd_escape/adv.txt
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/508830/100/0/threaded
- af854a3a-2127-422b-91ae-364da2661108http://www.ush.it/team/ush/hack-jetty6x7x/jetty-adv.txt
- af854a3a-2127-422b-91ae-364da2661108http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.mortbay.jetty:jetty | 7.0.0.pre4 ... 7.0.0pre3 (6 versions) | 7.0.2 | — |
Data Freshness Timeline
(refreshed 5× in last 7d / 36× 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.
- 2026-07-06 02:19 UTCEPSS rescore
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- 2026-05-29 13:04 UTCEG score recompute
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- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Frequently asked(4)
What is CVE-2009-4611?
CVE-2009-4611 is a none vulnerability published on January 13, 2010. Mort Bay Jetty 6.x through 6.1.22 and 7.0.0 writes backtrace data without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal…
When was CVE-2009-4611 disclosed?
CVE-2009-4611 was first published in the National Vulnerability Database on January 13, 2010, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-4611 actively exploited?
CVE-2009-4611 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-4611?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-4611, 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
See which npm, PyPI, Go, and Maven packages are affected by CVE-2009-4611
Is Your Infrastructure Affected by CVE-2009-4611?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.