CVE-2026-69153

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Source
https://cve.org/CVERecord?id=CVE-2026-69153
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-69153.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-69153
Aliases
Downstream
Related
Published
2026-08-03T16:56:25.733Z
Modified
2026-08-04T21:26:59.659910925Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
PostCSS: incomplete fix of CVE-2026-45623 — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset
Details

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200",
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69153.json"
}
References

Affected packages

Git / github.com/postcss/postcss

Affected ranges

Type
GIT
Repo
https://github.com/postcss/postcss
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9543b22769bef5bcd47600fbca752204c106cda8
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "8.5.19"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*
0.1
0.2
0.3
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
1.*
1.0.0
2.*
2.0.0
2.1.0
2.1.1
2.1.2
2.2.0
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.0.7
4.*
4.0.0
4.0.1
4.0.2
4.0.3
4.0.4
4.0.5
4.0.6
4.1.0
4.1.1
4.1.10
4.1.11
4.1.12
4.1.13
4.1.14
4.1.15
4.1.16
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.1.9
5.*
5.0.0
5.0.1
5.0.10
5.0.11
5.0.12
5.0.13
5.0.14
5.0.15
5.0.16
5.0.17
5.0.18
5.0.19
5.0.2
5.0.20
5.0.21
5.0.3
5.0.4
5.0.5
5.0.6
5.0.7
5.0.8
5.0.9
5.1.0
5.1.1
5.1.2
5.2.0
5.2.1
5.2.10
5.2.11
5.2.12
5.2.13
5.2.14
5.2.15
5.2.16
5.2.17
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
6.*
6.0.0
6.0.1
6.0.10
6.0.11
6.0.12
6.0.13
6.0.14
6.0.15
6.0.16
6.0.17
6.0.18
6.0.19
6.0.2
6.0.20
6.0.21
6.0.22
6.0.23
6.0.3
6.0.4
6.0.5
6.0.6
6.0.7
6.0.8
6.0.9
7.*
7.0.0
7.0.1
7.0.10
7.0.11
7.0.12
7.0.13
7.0.14
7.0.15
7.0.16
7.0.17
7.0.18
7.0.19
7.0.2
7.0.20
7.0.21
7.0.22
7.0.23
7.0.24
7.0.25
7.0.26
7.0.27
7.0.28
7.0.29
7.0.3
7.0.30
7.0.31
7.0.32
7.0.4
7.0.5
7.0.6
7.0.7
7.0.8
7.0.9
8.*
8.0.0
8.0.1
8.0.2
8.0.3
8.0.4
8.0.5
8.0.6
8.0.7
8.0.8
8.0.9
8.1.0
8.1.1
8.1.10
8.1.11
8.1.12
8.1.13
8.1.14
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.1.7
8.1.8
8.1.9
8.2.0
8.2.1
8.2.10
8.2.11
8.2.12
8.2.13
8.2.14
8.2.15
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
8.2.7
8.2.8
8.2.9
8.3.0
8.3.1
8.3.10
8.3.11
8.3.2
8.3.3
8.3.4
8.3.5
8.3.6
8.3.7
8.3.8
8.3.9
8.4.0
8.4.1
8.4.10
8.4.11
8.4.12
8.4.13
8.4.14
8.4.15
8.4.16
8.4.17
8.4.18
8.4.19
8.4.2
8.4.20
8.4.21
8.4.22
8.4.23
8.4.24
8.4.25
8.4.26
8.4.27
8.4.28
8.4.29
8.4.3
8.4.30
8.4.31
8.4.32
8.4.33
8.4.34
8.4.35
8.4.36
8.4.37
8.4.38
8.4.39
8.4.4
8.4.40
8.4.41
8.4.42
8.4.43
8.4.44
8.4.45
8.4.46
8.4.47
8.4.48
8.4.49
8.4.5
8.4.6
8.4.7
8.4.8
8.4.9
8.5.0
8.5.1
8.5.10
8.5.11
8.5.12
8.5.13
8.5.14
8.5.15
8.5.16
8.5.17
8.5.18
8.5.2
8.5.3
8.5.4
8.5.5
8.5.6
8.5.7
8.5.8
8.5.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-69153.json"