CVE-2009-1234
MEDIUM · CVSS 4.3EPSS 6.5%EU EUVD
Opera 9.64 allows remote attackers to cause a denial of service (application crash) via an XML document containing a long series of start-tags with no corresponding end-tags. NOTE: it was later reported that 9.52 is also affected.
Key facts
- CVSS score
- 4.3 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 6.5% (94th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-1233)
- Published
- April 2, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-1233 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- opera / opera browser
- opera / opera browser
References
- http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html
- http://websecurity.com.ua/3216/
- http://www.securityfocus.com/bid/34298(Exploit)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49522
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5432
- https://www.exploit-db.com/exploits/8320
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain