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Fencer Vulns
medium 5.1

CVE-2006-1834 json

Integer signedness error in Opera before 8.54 allows remote attackers to execute arbitrary code via long values in a stylesheet attribute,…

published 2006-04-19 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-1834

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.4%
EPSS 12.4% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

Integer signedness error in Opera before 8.54 allows remote attackers to execute arbitrary code via long values in a stylesheet attribute, which pass a length check. NOTE: a sign extension problem makes the attack easier with shorter strings.

Patch / fix

Timeline

  1. First public exploit (EDB-27641)
  2. Published

Exploit prediction

12.35% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-27641 Opera Web Browser 8.52 - Stylesheet Attribute Buffer Overflow dos, 2006-04-13
  • securityfocus.com http://www.securityfocus.com/bid/17513 referenced PoC, tagged "exploit" by a source, unverified
  • securitytracker.com http://securitytracker.com/id?1015912 referenced PoC, tagged "exploit" by a source, unverified
  • sec-consult.com http://www.sec-consult.com/259.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

Classification

Weakness

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.