CVSS 3.1
6.8 mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:NCVE-2020-16844
Medium (6.8) in istio istio. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in istio.io/istio 1.5.9, 1.6.8.
In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- istio:istio
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-82mm-ffjr-h86c | Go | istio.io/istio | >=1.5.0 <1.5.9 | 1.5.9 |
| GHSA-82mm-ffjr-h86c | Go | istio.io/istio | >=1.6.0 <1.6.8 | 1.6.8 |