Use-after-free vulnerability in WebKit, as used in Apple Safari before 5.0.5; iOS before 4.3.2 for iPhone, iPod, and iPad; iOS before 4.2.7 for iPhone 4 (CDMA); and possibly other products allows remote attackers to execute arbitrary code by adding children to a WBR tag and then removing the tag, related to text nodes, as demonstrated by Chaouki Bekrar during a Pwn2Own competition at CanSecWest 2011.
CVE-2011-1344
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 6%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
- 92.4%
- KEV
- Not listed
Published
March 10, 2011
Last Modified
April 29, 2026
References (36)
- cve@mitrehttp://dvlabs.tippingpoint.com/blog/2011/02/02/pwn2own-2011
- cve@mitrehttp://lists.apple.com/archives/security-announce/2011//Apr/msg00000.html
- cve@mitrehttp://lists.apple.com/archives/security-announce/2011//Apr/msg00001.html
- cve@mitrehttp://lists.apple.com/archives/security-announce/2011//Apr/msg00002.html
- cve@mitrehttp://secunia.com/advisories/44151
- cve@mitrehttp://secunia.com/advisories/44154
- cve@mitrehttp://support.apple.com/kb/HT4596
- cve@mitrehttp://support.apple.com/kb/HT4607
- cve@mitrehttp://twitter.com/aaronportnoy/statuses/45632544967901187
- cve@mitrehttp://www.computerworld.com/s/article/9214002/Safari_IE_hacked_first_at_Pwn2Own
- cve@mitrehttp://www.securityfocus.com/archive/1/517505/100/0/threaded
- cve@mitrehttp://www.securityfocus.com/archive/1/517517/100/0/threaded
- cve@mitrehttp://www.securityfocus.com/bid/46822
- cve@mitrehttp://www.securitytracker.com/id?1025363
- cve@mitrehttp://www.vupen.com/english/advisories/2011/0984
Data Freshness Timeline
(refreshed 8× in last 7d / 39× 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 16:23 UTCEPSS rescore
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Frequently asked(4)
What is CVE-2011-1344?
CVE-2011-1344 is a none vulnerability published on March 10, 2011. Use-after-free vulnerability in WebKit, as used in Apple Safari before 5.0.5; iOS before 4.3.2 for iPhone, iPod, and iPad; iOS before 4.2.7 for iPhone 4 (CDMA); and possibly other products allows remote attackers to execute arbitrary code by adding children to a WBR tag and then removing the tag,…
When was CVE-2011-1344 disclosed?
CVE-2011-1344 was first published in the National Vulnerability Database on March 10, 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-2011-1344 actively exploited?
CVE-2011-1344 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-1344?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1344, 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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