CVE-2026-27809

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Source
https://cve.org/CVERecord?id=CVE-2026-27809
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27809.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-27809
Aliases
Downstream
Published
2026-02-25T23:57:00Z
Modified
2026-10-21T02:31:01Z
Severity
  • 6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U CVSS Calculator
Summary
psd-tools: Compression module has unguarded zlib decompression, missing dimension validation, and hardening gaps
Details

psd-tools is a Python package for working with Adobe Photoshop PSD files. Prior to version 1.12.2, when a PSD file contains malformed RLE-compressed image data (e.g. a literal run that extends past the expected row size), decode_rle() raises ValueError which propagated all the way to the user, crashing psd.composite() and psd-tools export. decompress() already had a fallback that replaces failed channels with black pixels when result is None, but it never triggered because the ValueError from decode_rle() was not caught. The fix in version 1.12.2 wraps the decode_rle() call in a try/except so the existing fallback handles the error gracefully.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-190",
        "CWE-409",
        "CWE-617",
        "CWE-704",
        "CWE-755",
        "CWE-789"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27809.json"
}
References

Affected packages

Git / github.com/psd-tools/psd-tools

Affected ranges

Type
GIT
Repo
https://github.com/psd-tools/psd-tools
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c42b1c0bbc37c8d06b019724b8eeae977b44a7e2
Fixed
6c0a78f195b5942757886a1863793fd5946c1fb1
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:psd-tools_project:psd-tools:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.12.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "6c0a78f195b5942757886a1863793fd5946c1fb1"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.12.2",
            "range":  [
                {
                    "fixed":  "c42b1c0bbc37c8d06b019724b8eeae977b44a7e2"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.1
0.1.1
0.1.2
0.1.3
0.1.4
0.10
0.2
0.5
0.6
0.7
0.7.1
0.8
0.8.1
0.8.2
0.8.3
0.8.4
0.9
0.9.1
1.*
1.0
1.1
1.2
1.3
1.4
1.8.10
1.8.11
1.8.12
1.8.14
1.8.17
1.8.21
1.8.25
1.8.26
1.8.8
1.8.9
v.*
v.1.9.0
v1.*
v1.10.0
v1.10.1
v1.10.10
v1.10.11
v1.10.12
v1.10.13
v1.10.2
v1.10.3
v1.10.4
v1.10.5
v1.10.6
v1.10.7
v1.10.8
v1.10.9
v1.11.0
v1.11.1
v1.12.0
v1.12.1
v1.8.26
v1.8.27
v1.8.28
v1.8.29
v1.8.30
v1.8.31
v1.8.32
v1.8.33
v1.8.34
v1.8.35
v1.8.36
v1.8.37.post1
v1.8.37.post2
v1.8.37.post3
v1.8.38
v1.9.1
v1.9.10
v1.9.11
v1.9.12
v1.9.13
v1.9.14
v1.9.15
v1.9.16
v1.9.17
v1.9.18
v1.9.19
v1.9.2
v1.9.20
v1.9.21
v1.9.22
v1.9.23
v1.9.24
v1.9.25
v1.9.26
v1.9.27
v1.9.28
v1.9.29
v1.9.3
v1.9.30
v1.9.31
v1.9.32
v1.9.33
v1.9.34
v1.9.4
v1.9.5
v1.9.6
v1.9.7
v1.9.8
v1.9.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27809.json"