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Fencer Vulns
medium 4.3

CVE-2023-6835 json

WSO2 API Manager allows attackers to change the API rating

published 2023-12-15 2 y ago modified 2026-06-17 4 mo ago also GHSA-w7rx-824v-rgx5 , EUVD-2023-3309

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

Multiple WSO2 products have been identified as vulnerable due to lack of server-side input validation in the Forum feature, API rating could be manipulated.

Patch / fix

  • WSO2 WSO2 API Manager 2.2.0.16, 2.5.0.17, 2.6.0.24
  • WSO2 WSO2 IoT Server 3.3.1.17

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.wso2.carbon.apimgt:forum
<=9.0.78
no fix listed

Affected products

  • WSO2 WSO2 API Manager
  • WSO2 WSO2 IoT Server

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

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.