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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-113c-txjs-17d6
Summary
Authorization bypass in Istio
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.

### Specific Go Packages Affected
istio.io/istio/pilot/pkg/security/authz/model/matcher
Aliases
0
alias CVE-2020-16844
1
alias GHSA-82mm-ffjr-h86c
Fixed_packages
Affected_packages
0
url pkg:rpm/redhat/servicemesh@1.1.7-1?arch=el8
purl pkg:rpm/redhat/servicemesh@1.1.7-1?arch=el8
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-113c-txjs-17d6
resource_url http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/servicemesh@1.1.7-1%3Farch=el8
References
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16844.json
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16844.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2020-16844
reference_id
reference_type
scores
0
value 0.00284
scoring_system epss
scoring_elements 0.5184
published_at 2026-04-18T12:55:00Z
1
value 0.00284
scoring_system epss
scoring_elements 0.51827
published_at 2026-04-11T12:55:00Z
2
value 0.00284
scoring_system epss
scoring_elements 0.51833
published_at 2026-04-16T12:55:00Z
3
value 0.00284
scoring_system epss
scoring_elements 0.51791
published_at 2026-04-13T12:55:00Z
4
value 0.00284
scoring_system epss
scoring_elements 0.51806
published_at 2026-04-12T12:55:00Z
5
value 0.00284
scoring_system epss
scoring_elements 0.51689
published_at 2026-04-01T12:55:00Z
6
value 0.00284
scoring_system epss
scoring_elements 0.51739
published_at 2026-04-02T12:55:00Z
7
value 0.00284
scoring_system epss
scoring_elements 0.51765
published_at 2026-04-04T12:55:00Z
8
value 0.00284
scoring_system epss
scoring_elements 0.51726
published_at 2026-04-07T12:55:00Z
9
value 0.00284
scoring_system epss
scoring_elements 0.51781
published_at 2026-04-08T12:55:00Z
10
value 0.00284
scoring_system epss
scoring_elements 0.51777
published_at 2026-04-09T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2020-16844
2
reference_url https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c
3
reference_url https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace
4
reference_url https://github.com/istio/istio/releases
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/istio/istio/releases
5
reference_url https://github.com/istio/istio/releases/tag/1.5.9
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/istio/istio/releases/tag/1.5.9
6
reference_url https://github.com/istio/istio/releases/tag/1.6.8
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/istio/istio/releases/tag/1.6.8
7
reference_url https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9
8
reference_url https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8
9
reference_url https://istio.io/latest/news/security/istio-security-2020-009
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://istio.io/latest/news/security/istio-security-2020-009
10
reference_url https://nvd.nist.gov/vuln/detail/CVE-2020-16844
reference_id
reference_type
scores
0
value 6.8
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2020-16844
11
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1861625
reference_id 1861625
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1861625
12
reference_url https://access.redhat.com/errata/RHSA-2020:3425
reference_id RHSA-2020:3425
reference_type
scores
url https://access.redhat.com/errata/RHSA-2020:3425
Weaknesses
0
cwe_id 284
name Improper Access Control
description The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Exploits
Severity_range_score4.0 - 6.9
Exploitability0.5
Weighted_severity6.2
Risk_score3.1
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-113c-txjs-17d6