Django REST framework

Package Instance

Lookup for vulnerable packages by Package URL.

Purlpkg:maven/org.http4s/http4s-core_2.12@0.21.26
Typemaven
Namespaceorg.http4s
Namehttp4s-core_2.12
Version0.21.26
Qualifiers
Subpath
Is_vulnerabletrue
Next_non_vulnerable_version0.21.34
Latest_non_vulnerable_version1.0-2-1e49ccf
Affected_by_vulnerabilities
0
url VCID-1ykn-yyp7-wbgg
vulnerability_id VCID-1ykn-yyp7-wbgg
summary 
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
http4s is an open source scala interface for HTTP. Header values (`Header.value`), Status reason phrases (`Status.reason`), URI paths (`Uri.Path`), URI authority registered names (`URI.RegName`).
references
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-41084
reference_id
reference_type
scores
0
value 0.00451
scoring_system epss
scoring_elements 0.64028
published_at 2026-06-04T12:55:00Z
1
value 0.00451
scoring_system epss
scoring_elements 0.6407
published_at 2026-06-05T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-41084
1
reference_url https://github.com/http4s/http4s
reference_id
reference_type
scores
0
value 8.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s
2
reference_url https://github.com/http4s/http4s/commit/d02007db1da4f8f3df2dbf11f1db9ac7afc3f9d8
reference_id
reference_type
scores
0
value 8.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s/commit/d02007db1da4f8f3df2dbf11f1db9ac7afc3f9d8
3
reference_url https://httpwg.org/http-core/draft-ietf-httpbis-semantics-latest.html#fields.values
reference_id
reference_type
scores
0
value 8.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://httpwg.org/http-core/draft-ietf-httpbis-semantics-latest.html#fields.values
4
reference_url https://owasp.org/www-community/attacks/HTTP_Response_Splitting
reference_id
reference_type
scores
0
value 8.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://owasp.org/www-community/attacks/HTTP_Response_Splitting
5
reference_url https://nvd.nist.gov/vuln/detail/CVE-2021-41084
reference_id CVE-2021-41084
reference_type
scores
0
value 8.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2021-41084
6
reference_url https://github.com/advisories/GHSA-5vcm-3xc3-w7x3
reference_id GHSA-5vcm-3xc3-w7x3
reference_type
scores
url https://github.com/advisories/GHSA-5vcm-3xc3-w7x3
7
reference_url https://github.com/http4s/http4s/security/advisories/GHSA-5vcm-3xc3-w7x3
reference_id GHSA-5vcm-3xc3-w7x3
reference_type
scores
0
value 8.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s/security/advisories/GHSA-5vcm-3xc3-w7x3
fixed_packages
0
url pkg:maven/org.http4s/http4s-core_2.12@0.21.29
purl pkg:maven/org.http4s/http4s-core_2.12@0.21.29
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-ecme-hxe7-q7d8
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.29
1
url pkg:maven/org.http4s/http4s-core_2.12@0.22.5
purl pkg:maven/org.http4s/http4s-core_2.12@0.22.5
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-ecme-hxe7-q7d8
1
vulnerability VCID-zpsp-jh45-7ygv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22.5
2
url pkg:maven/org.http4s/http4s-core_2.12@0.23.4
purl pkg:maven/org.http4s/http4s-core_2.12@0.23.4
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-ecme-hxe7-q7d8
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.23.4
3
url pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf
purl pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf
aliases CVE-2021-41084, GHSA-5vcm-3xc3-w7x3
risk_score 4.0
exploitability 0.5
weighted_severity 8.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-1ykn-yyp7-wbgg
1
url VCID-83r2-kxmr-zucc
vulnerability_id VCID-83r2-kxmr-zucc
summary 
Origin Validation Error
The original `CORS` implementation and `CORSConfig` are deprecated.
references
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-39185
reference_id
reference_type
scores
0
value 0.00169
scoring_system epss
scoring_elements 0.37911
published_at 2026-06-05T12:55:00Z
1
value 0.00169
scoring_system epss
scoring_elements 0.3782
published_at 2026-06-04T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-39185
1
reference_url https://github.com/http4s/http4s
reference_id
reference_type
scores
0
value 9.1
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s
2
reference_url https://github.com/http4s/http4s/releases/tag/v0.23.2
reference_id
reference_type
scores
0
value 9.1
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s/releases/tag/v0.23.2
3
reference_url https://nvd.nist.gov/vuln/detail/CVE-2021-39185
reference_id CVE-2021-39185
reference_type
scores
0
value 9.1
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2021-39185
4
reference_url https://github.com/advisories/GHSA-52cf-226f-rhr6
reference_id GHSA-52cf-226f-rhr6
reference_type
scores
url https://github.com/advisories/GHSA-52cf-226f-rhr6
5
reference_url https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
reference_id GHSA-52cf-226f-rhr6
reference_type
scores
0
value 9.1
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
1
value CRITICAL
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s/security/advisories/GHSA-52cf-226f-rhr6
fixed_packages
0
url pkg:maven/org.http4s/http4s-core_2.12@0.21.27
purl pkg:maven/org.http4s/http4s-core_2.12@0.21.27
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1ykn-yyp7-wbgg
1
vulnerability VCID-ecme-hxe7-q7d8
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.27
1
url pkg:maven/org.http4s/http4s-core_2.12@0.22-53-01128f5
purl pkg:maven/org.http4s/http4s-core_2.12@0.22-53-01128f5
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1ykn-yyp7-wbgg
1
vulnerability VCID-83r2-kxmr-zucc
2
vulnerability VCID-ecme-hxe7-q7d8
3
vulnerability VCID-zpsp-jh45-7ygv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22-53-01128f5
2
url pkg:maven/org.http4s/http4s-core_2.12@0.22.3
purl pkg:maven/org.http4s/http4s-core_2.12@0.22.3
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1ykn-yyp7-wbgg
1
vulnerability VCID-ecme-hxe7-q7d8
2
vulnerability VCID-zpsp-jh45-7ygv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22.3
3
url pkg:maven/org.http4s/http4s-core_2.12@0.23.2
purl pkg:maven/org.http4s/http4s-core_2.12@0.23.2
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1ykn-yyp7-wbgg
1
vulnerability VCID-ecme-hxe7-q7d8
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.23.2
4
url pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf
purl pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@1.0-2-1e49ccf
aliases CVE-2021-39185, GHSA-52cf-226f-rhr6
risk_score 4.5
exploitability 0.5
weighted_severity 9.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-83r2-kxmr-zucc
2
url VCID-ecme-hxe7-q7d8
vulnerability_id VCID-ecme-hxe7-q7d8
summary 
Http4s improperly parses User-Agent and Server headers
### Impact

The `User-Agent` and `Server` header parsers are susceptible to a fatal error on certain inputs.  In http4s, modeled headers are lazily parsed, so this only applies to services that explicitly request these typed headers. 

#### v0.21.x

```scala
val unsafe: Option[`User-Agent`] = req.headers.get(`User-Agent`)
```

#### v0.22.x, v0.23.x, v1.x

```scala
val unsafe: Option[`User-Agent`] = req.headers.get[`User-Agent`]
val alsoUnsafe: Option[`Server`] = req.headers.get[Server]
```

### Patches

Fixes are released in 0.21.34, 0.22.15, 0.23.17, and 1.0.0-M38.

### Workarounds

#### Use the weakly typed header interface

##### v0.21.x

```scala
val safe: Option[Header] = req.headers.get("User-Agent".ci)
// but don't do this
val unsafe = header.map(_.parsed) 
```

##### v0.22.x, v0.23.x, v1.x

```scala
val safe: Option[Header] = req.headers.get(ci"User-Agent")
```
references
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2023-22465
reference_id
reference_type
scores
0
value 0.00335
scoring_system epss
scoring_elements 0.5657
published_at 2026-06-04T12:55:00Z
1
value 0.00335
scoring_system epss
scoring_elements 0.56623
published_at 2026-06-05T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2023-22465
1
reference_url https://github.com/http4s/http4s
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://github.com/http4s/http4s
2
reference_url https://github.com/http4s/http4s/security/advisories/GHSA-54w6-vxfh-fw7f
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value HIGH
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-03-10T21:02:19Z/
url https://github.com/http4s/http4s/security/advisories/GHSA-54w6-vxfh-fw7f
3
reference_url https://nvd.nist.gov/vuln/detail/CVE-2023-22465
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value HIGH
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2023-22465
4
reference_url https://github.com/advisories/GHSA-54w6-vxfh-fw7f
reference_id GHSA-54w6-vxfh-fw7f
reference_type
scores
url https://github.com/advisories/GHSA-54w6-vxfh-fw7f
fixed_packages
0
url pkg:maven/org.http4s/http4s-core_2.12@0.21.34
purl pkg:maven/org.http4s/http4s-core_2.12@0.21.34
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.34
1
url pkg:maven/org.http4s/http4s-core_2.12@0.22.15
purl pkg:maven/org.http4s/http4s-core_2.12@0.22.15
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-zpsp-jh45-7ygv
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.22.15
2
url pkg:maven/org.http4s/http4s-core_2.12@0.23.17
purl pkg:maven/org.http4s/http4s-core_2.12@0.23.17
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.23.17
aliases CVE-2023-22465, GHSA-54w6-vxfh-fw7f
risk_score 4.0
exploitability 0.5
weighted_severity 8.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-ecme-hxe7-q7d8
Fixing_vulnerabilities
Risk_score4.5
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:maven/org.http4s/http4s-core_2.12@0.21.26