CVE-2021-21395 json
Magneto-lts vulnerable to Cross-Site Request Forgery
published 3y ago modified 4mo ago also GHSA-r3c9-9j5q-pwv4 , EUVD-2023-0538
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
Magneto LTS (Long Term Support) is a community developed alternative to the Magento CE official releases. Versions prior to 19.4.22 and 20.0.19 are vulnerable to Cross-Site Request Forgery. The password reset form is vulnerable to CSRF between the time the reset password link is clicked and user submits new password. This issue is patched in versions 19.4.22 and 20.0.19. There are no workarounds.
Patch / fix
- packagist openmage/magento-lts 19.4.22, 20.0.19
- openmage magento 19.4.22, 20.0.19
Is CVE-2021-21395 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- hackerone.com https://hackerone.com/reports/1086752 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | openmage/magento-lts | <19.4.22 >=20.0.0, <20.0.19 |
19.4.22 20.0.19 |
Affected products
- OpenMage magento-lts
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
hackerone.com
/reports/1086752
web, exploit, third-party-advisory
-
github.com
/OpenMage/magento-lts/security/advisories/GHSA-r3c9-9j5q-pwv4
web, third-party-advisory
-
packagist.org
/packages/openmage/magento-lts
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-21395
advisory
-
github.com
/OpenMage/magento-lts
package
-
github.com
/OpenMage/magento-lts/releases/tag/v19.4.22
web
-
github.com
/OpenMage/magento-lts/releases/tag/v20.0.19
web
Sources
- CVE List CVE-2021-21395
- GitHub Advisory GHSA-r3c9-9j5q-pwv4
- NVD CVE-2021-21395
Fencer Intel 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.