10

CVE-2019-9901: envoyproxy envoy

CVSS: 10.0v3.0CriticalModified
AliasesGHSA-2wmf-p7f8-w42hGHSA-xcx5-93pw-jw2w
Published 25-04-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-9901 is a critical (CVSS 10.0) vulnerability in envoyproxy envoy. EPSS estimates a 4.95% chance of exploitation in the next 30 days, higher than 92% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.0 (NVD)
EPSS score
4.95%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2019:0741

Timeline

  1. 25-04-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

4.95%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 4.95% on 19-09-2026

19-09-202619-10-2026
EPSS score
4.95%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Envoyproxy1 product
Github.com/envoyproxy1 product
  • envoy< 1.9.1

2 vendors · 2 products

References

9 links