CVE-2021-43265 json
In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, certain tag syntax could be used for XSS, such as via a SCRIPT element.
published 2021-11-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30209
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, certain tag syntax could be used for XSS, such as via a SCRIPT element.
Patch / fix
- mahara mahara 20.04.5, 20.10.3, 21.04.2
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.launchpad.net https://bugs.launchpad.net/mahara/+bug/1944633 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
bugs.launchpad.net
/mahara/+bug/1944633
exploit, third-party-advisory
-
mahara.org
/interaction/forum/topic.php?id=8953
vendor-advisory
Sources
- CVE List CVE-2021-43265
- NVD CVE-2021-43265
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