4.3

CVE-2021-30538: fedoraproject fedora Incorrect Authorization

Modified
AliasesUBUNTU-CVE-2021-30538DEBIAN-CVE-2021-30538ALPINE-CVE-2021-30538
Published 07-06-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-30538 is a medium (CVSS 4.3) Incorrect Authorization vulnerability in fedoraproject fedora. EPSS estimates a 15.73% chance of exploitation in the next 30 days, higher than 96.8% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
15.73%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
OPENSUSE-SU-2021:0825-1OPENSUSE-SU-2021:0840-1OPENSUSE-SU-2024:10681-1OPENSUSE-SU-2024:12948-1

Timeline

  1. 07-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Insufficient policy enforcement in content security policy in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass content security policy via a crafted HTML page.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

15.73%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

No change 0.00 pp

From 15.73% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (crbug.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • chromium< 91.0.4472.77-r0
Debian1 product
  • chromium< 93.0.4577.82-1
Fedoraproject1 product
Google1 product
  • chrome≥ unspecified, < 91.0.4472.77 | < 91.0.4472.77
Ubuntu1 product
  • chromium-browser< 91.0.4472.77-0ubuntu0.18.04.1

5 vendors · 5 products

References

9 links