Django REST framework

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-weq5-m3c7-c3gq
SummaryLemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy allows an authenticated low-privileged user to create a link post through POST /api/v3/post. When a post is created in a public community, the backend asynchronously sends a Webmention to the attacker-controlled link target. The submitted URL is checked for syntax and scheme, but the audited code path does not reject loopback, private, or link-local destinations before the Webmention request is issued. This lets a normal user trigger server-side HTTP requests toward internal services. This issue has been patched in version 0.19.18.
Aliases
0
alias CVE-2026-42180
1
alias GHSA-3jvj-v6w2-h948
Fixed_packages
0
url pkg:cargo/lemmy_api_common@0.19.18
purl pkg:cargo/lemmy_api_common@0.19.18
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:cargo/lemmy_api_common@0.19.18
Affected_packages
References
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2026-42180
reference_id
reference_type
scores
0
value 0.00044
scoring_system epss
scoring_elements 0.13874
published_at 2026-06-14T12:55:00Z
1
value 0.00044
scoring_system epss
scoring_elements 0.13904
published_at 2026-06-13T12:55:00Z
2
value 0.00044
scoring_system epss
scoring_elements 0.13906
published_at 2026-06-12T12:55:00Z
3
value 0.00044
scoring_system epss
scoring_elements 0.13791
published_at 2026-06-11T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2026-42180
1
reference_url https://github.com/LemmyNet/lemmy
reference_id
reference_type
scores
0
value 6.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/LemmyNet/lemmy
2
reference_url https://github.com/LemmyNet/lemmy/commit/1f06693b708020c5c3a3752bd2f1c6006a75e9bc
reference_id
reference_type
scores
0
value 6.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/LemmyNet/lemmy/commit/1f06693b708020c5c3a3752bd2f1c6006a75e9bc
3
reference_url https://nvd.nist.gov/vuln/detail/CVE-2026-42180
reference_id
reference_type
scores
0
value 6.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2026-42180
4
reference_url https://github.com/LemmyNet/lemmy/releases/tag/0.19.18
reference_id 0.19.18
reference_type
scores
0
value 6.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-13T17:17:59Z/
url https://github.com/LemmyNet/lemmy/releases/tag/0.19.18
5
reference_url https://github.com/advisories/GHSA-3jvj-v6w2-h948
reference_id GHSA-3jvj-v6w2-h948
reference_type
scores
0
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-3jvj-v6w2-h948
6
reference_url https://github.com/LemmyNet/lemmy/security/advisories/GHSA-3jvj-v6w2-h948
reference_id GHSA-3jvj-v6w2-h948
reference_type
scores
0
value 6.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
2
value MODERATE
scoring_system generic_textual
scoring_elements
3
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-13T17:17:59Z/
url https://github.com/LemmyNet/lemmy/security/advisories/GHSA-3jvj-v6w2-h948
Weaknesses
0
cwe_id 918
name Server-Side Request Forgery (SSRF)
description The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
Exploits
Severity_range_score4.0 - 6.9
Exploitabilitynull
Weighted_severitynull
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-weq5-m3c7-c3gq