Opera before 10.01 does not properly restrict HTML in a (1) RSS or (2) Atom feed, which allows remote attackers to conduct cross-site scripting (XSS) attacks, and conduct cross-zone scripting attacks involving the Feed Subscription Page to read feeds or create feed subscriptions, via a crafted feed, related to the rendering of the application/rss+xml content type as "scripted content."
Published Sep 18, 2009
4.3
MEDIUMCVSS 2.0
EPSS 2.68%
Description
Opera before 10.01 does not properly restrict HTML in a (1) RSS or (2) Atom feed, which allows remote attackers to conduct cross-site scripting (XSS) attacks, and conduct cross-zone scripting attacks involving the Feed Subscription Page to read feeds or create feed subscriptions, via a crafted feed, related to the rendering of the application/rss+xml content type as "scripted content."
Affected products
No data.
- 5.0
- 5.0
- 5.0
- 5.0
- 5.0
- 5.0
- 5.0
- 5.0
- 5.02
- 5.10
- 5.11
- 5.12
- 6.0
- 6.0
- 6.0
- 6.0
- 6.0
- 6.0
- 6.1
- 6.01
- 6.1
- 6.02
- 6.03
- 6.04
- 6.05
- 6.06
- 6.11
- 6.12
- 7.0
- 7.0
- 7.0
- 7.0
- 7.01
- 7.02
- 7.03
- 7.10
- 7.10
- 7.11
- 7.11
- 7.20
- 7.20
- 7.21
- 7.22
- 7.23
- 7.50
- 7.50
- 7.51
- 7.52
- 7.53
- 7.54
- 7.54
- 7.54
- 7.60
- 8.0
- 8.0
- 8.0
- 8.0
- 8.01
- 8.02
- 8.50
- 8.51
- 8.52
- 8.53
- 8.54
- 9.0
- 9.0
- 9.0
- 9.01
- 9.02
- 9.10
- 9.12
- 9.20
- 9.20
- 9.21
- 9.22
- 9.23
- 9.24
- 9.25
- 9.26
- 9.27
- 9.50
- 9.50
- 9.50
- 9.51
- 9.52
- 9.60
- 9.60
- 9.61
- 9.62
- 9.63
- 9.64
- 10.00
- 10.00
- 10.00
- 10.00
- 10.01
- 10.10
- 10.10
- 10.50
- 10.50
- 10.50
- 10.51
- 10.52
- 10.53
- 10.53
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.68% (0.02680) | 85.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.68% (0.02680) | 83.81th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.80% (0.00795) | 72.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.54% (0.00540) | 78.04th | v3 (v2023.03.01) |
| Mar 13, 2024 | 0.54% (0.00540) | 76.77th | v3 (v2023.03.01) |
| Dec 22, 2023 | 0.54% (0.00540) | 74.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.65% (0.00654) | 76.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.41% (0.03407) | 84.65th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.41% (0.03407) | 83.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.41% (0.03407) | 66.20th | v2 (v2022.01.01) |
References (15)
- http://archives.neohapsis.com/archives/bugtraq/2009-10/0289.html mailing-listx_refsource_BUGTRAQ
- http://secunia.com/advisories/37182 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securethoughts.com/2009/09/exploiting-chrome-and-operas-inbuilt-atomrss-reader-with-script-execution-and-more/ x_refsource_MISCExploit
- http://securethoughts.com/2009/10/hijacking-operas-native-page-using-malicious-rss-payloads/ x_refsource_MISC
- http://www.opera.com/docs/changelogs/mac/1001/ x_refsource_CONFIRMPatch
- http://www.opera.com/docs/changelogs/unix/1001/ x_refsource_CONFIRMPatch
- http://www.opera.com/docs/changelogs/windows/1001/ x_refsource_CONFIRMPatch
- http://www.opera.com/support/kb/view/939/ x_refsource_CONFIRMVendor Advisory
- http://www.osvdb.org/59358 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/archive/1/506517/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/36418 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/36850 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2009/3073 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54021 vdb-entryx_refsource_XF
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6314 vdb-entrysignaturex_refsource_OVAL
Change history (0)
No recorded changes yet.