CVE-2021-4431 json
msyk FMDataAPI FMDataAPI_Sample.php cross site scripting
published 2023-11-07 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-34258
- cvss
- 3.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
A vulnerability classified as problematic has been found in msyk FMDataAPI up to 22. Affected is an unknown function of the file FMDataAPI_Sample.php. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 23 is able to address this issue. The patch is identified as 3bd1709a8f7b1720529bf5dfc9855ad609f436cf. It is recommended to upgrade the affected component. VDB-244494 is the identifier assigned to this vulnerability.
Patch / fix
- github.com/msyk/FMDataAPI@3bd1709 commit
- github.com/msyk/FMDataAPI#54 pull request
- github.com/msyk/FMDataAPI/releases/tag/23 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| CNA | 3.0 | 3.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| CNA | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- msyk FMDataAPI
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/msyk/FMDataAPI/pull/54
issue-tracking, patch, vendor-advisory
-
github.com
/msyk/FMDataAPI/commit/3bd1709a8f7b1720529bf5dfc9855ad609f436cf
patch
-
github.com
/msyk/FMDataAPI/releases/tag/23
patch, release-notes
-
vuldb.com
/?id.244494
vdb-entry, permissions-required, third-party-advisory
-
vuldb.com
/?ctiid.244494
signature, permissions-required, third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-4431
- NVD CVE-2021-4431
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.