Cross-site scripting (XSS) vulnerability in io.swf in the IO Utility component in Yahoo! YUI 3.10.2, as used in Moodle through 2.1.10, 2.2.x before 2.2.11, 2.3.x before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.1, and other products, allows remote attackers to inject arbitrary web script or HTML via a crafted string in a URL
Published Jul 26, 2013
5.3
MEDIUMCVSS 4.0
EPSS 1.49%
Description
Cross-site scripting (XSS) vulnerability in io.swf in the IO Utility component in Yahoo! YUI 3.10.2, as used in Moodle through 2.1.10, 2.2.x before 2.2.11, 2.3.x before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.1, and other products, allows remote attackers to inject arbitrary web script or HTML via a crafted string in a URL. NOTE: this vulnerability exists because of a CVE-2013-4939 regression.
Affected products
No data.
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 2.1.6
- 2.1.7
- 2.1.8
- 2.1.9
- 2.1.10
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
- 2.2.5
- 2.2.6
- 2.2.7
- 2.2.8
- 2.2.9
- 2.2.10
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 2.3.7
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.5.0
- 3.0.0
- 3.1.0
- 3.1.1
- 3.1.2
- 3.2.0
- 3.3.0
- 3.4.0
- 3.4.1
- 3.5.0
- 3.5.1
- 3.6.0
- 3.7.0
- 3.7.1
- 3.7.2
- 3.7.3
- 3.8.0
- 3.8.1
- 3.9.0
- 3.9.1
- 3.10.0
- 3.10.1
- 3.10.2
No data.
No Red Hat product state for this CVE.
yui
npm
Introduced 3.0.0 Fixed 3.10.11yui
npm
Introduced 3.10.12 Fixed 3.10.13moodle/moodle
Packagist
Introduced 0 Fixed 2.2.11moodle/moodle
Packagist
Introduced 2.3.0 Fixed 2.3.8moodle/moodle
Packagist
Introduced 2.4.0-rc1 Fixed 2.4.5moodle/moodle
Packagist
Introduced 2.5.0-beta Fixed 2.5.1
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | yui | 3.0.0 | 3.10.11 |
| npm | yui | 3.10.12 | 3.10.13 |
| Packagist | moodle/moodle | 0 | 2.2.11 |
| Packagist | moodle/moodle | 2.3.0 | 2.3.8 |
| Packagist | moodle/moodle | 2.4.0-rc1 | 2.4.5 |
| Packagist | moodle/moodle | 2.5.0-beta | 2.5.1 |
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
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 1, 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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.49% (0.01492) | 73.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.49% (0.01492) | 70.67th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.34% (0.00344) | 54.84th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00192) | 57.95th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.14% (0.00145) | 49.76th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.14% (0.00136) | 47.97th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.12% (0.00123) | 45.45th | v3 (v2023.03.01) |
| May 8, 2023 | 0.19% (0.00192) | 55.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00151) | 49.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (6)
- http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-39678 x_refsource_CONFIRM
- http://yuilibrary.com/support/20130515-vulnerability/ x_refsource_CONFIRMPatchVendor Advisory
- https://github.com/advisories/GHSA-x5hj-47vv-53p8 Advisory
- https://moodle.org/mod/forum/discuss.php?d=232496 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2013-4940
- https://web.archive.org/web/20130909203912/http://yuilibrary.com/support/20130515-vulnerability
| Link | Providers | Tags |
|---|---|---|
| http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-39678 | x_refsource_CONFIRM | |
| http://yuilibrary.com/support/20130515-vulnerability/ | x_refsource_CONFIRMPatchVendor Advisory | |
| https://github.com/advisories/GHSA-x5hj-47vv-53p8 | Advisory | |
| https://moodle.org/mod/forum/discuss.php?d=232496 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-4940 | ||
| https://web.archive.org/web/20130909203912/http://yuilibrary.com/support/20130515-vulnerability |
Change history (0)
No recorded changes yet.