Skip to content
Fencer Vulns
medium 4.3

CVE-2009-1234 json

Opera 9.64 allows remote attackers to cause a denial of service (application crash) via an XML document containing a long series of start-t…

published 2009-04-02 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1233

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.5%
EPSS 6.5% chance of exploitation in 30 days, percentile 93%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. First public exploit (EDB-8320)
  2. Published

Exploit prediction

6.52% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-8320 Opera 9.64 - 7400 nested elements XML Parsing Remote Crash dos, 2009-03-30
  • securityfocus.com http://www.securityfocus.com/bid/34298 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.