CVE-2021-31923: ping identity pingaccess HTTP Request/Response Smuggling
CVSS: 5.3v3.1MediumModified
Published 24-09-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-31923 is a medium (CVSS 5.3) HTTP Request/Response Smuggling vulnerability in ping identity pingaccess. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.6% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
0.71%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Ping Identity PingAccess before 5.3.3 allows HTTP request smuggling via header manipulation.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.71%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
0.00 pp
From 0.71% on 20-09-2026
20-09-202620-10-2026
EPSS score0.71%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ping identity1 product
- pingaccess5.3
Pingidentity1 product
- pingaccess< 5.3.3
2 vendors · 2 products
References
1 links- docs.pingidentity.com/bundle/pingaccess-53/page/wco1629833104567.htmlX Refsource CONFIRM