CVE-2020-23957 json
Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-…
published 2020-12-15 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-16694
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
Pega Platform through 8.4.x is affected by Cross Site Scripting (XSS) via the ConnectionID parameter, as demonstrated by a pyActivity=Data-TRACERSettings.pzStartTracerSession request to a PRAuth URI.
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- jayaramyalla.medium.com https://jayaramyalla.medium.com/cross-site-scripting-in-pega-cve-2020-23957-16d1c417da5f referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
jayaramyalla.medium.com
/cross-site-scripting-in-pega-cve-2020-23957-16d1c417da5f
exploit, third-party-advisory
Sources
- CVE List CVE-2020-23957
- NVD CVE-2020-23957
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.