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
2026-02-25T23:57:00.760Z
Modified
2026-03-03T02:56:44.311699Z
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), decoderle() 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 decoderle() 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 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27809.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-190",
        "CWE-409",
        "CWE-617",
        "CWE-704",
        "CWE-755",
        "CWE-789"
    ]
}
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

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"