CVE-2026-55497

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Source
https://cve.org/CVERecord?id=CVE-2026-55497
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55497.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55497
Aliases
Published
2026-07-31T03:28:59.171Z
Modified
2026-08-02T03:32:10.304598666Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)
Details

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compressed file size but do not limit decoded pixel dimensions, allowing an authenticated user to submit a small PNG, JPEG, or GIF that triggers an unbounded allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55497.json",
    "cwe_ids": [
        "CWE-400",
        "CWE-409",
        "CWE-770"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/cloudreve/cloudreve

Affected ranges

Type
GIT
Repo
https://github.com/cloudreve/cloudreve
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3607f79bb44c35d0be4fa8b6e24c0502b51415a9
Fixed
d4a145c3ac68f08b9071dec0f2ac025c6dc7362d
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.17.0"
        }
    ]
}

Affected versions

3.*
3.0.0
3.0.0-beta1
3.0.0-beta2
3.0.0-beta3
3.0.0-rc1
3.1.0
3.1.1
3.2.0
3.2.1
3.3.0
3.3.1
3.3.2
3.4.0
3.4.0-beta1
3.4.1
3.4.2
3.5.0
3.5.0-beta.3
3.5.0-beta1
3.5.0-beta2
3.5.1
3.5.2
3.5.3
3.6.0
3.6.0-beta1
3.6.1
3.6.2
3.7.0
3.7.1
3.8.0
3.8.0-beta1
3.8.1
3.8.2
3.8.3
4.*
4.0.0
4.0.0-beta.10
4.0.0-beta.11
4.0.0-beta.12
4.0.0-beta.13
4.0.0-beta.14
4.0.0-beta.6
4.0.0-beta.7
4.0.0-beta.8
4.0.0-beta.9
4.1.0
4.1.1
4.1.2
4.1.3
4.10.0
4.10.1
4.11.0
4.11.1
4.12.0
4.12.1
4.13.0
4.14.0
4.14.1
4.15.0
4.16.0
4.16.1
4.2.0
4.3.0
4.4.0
4.4.1
4.5.0
4.5.1
4.6.0
4.7.0
4.8.0
4.9.0
4.9.1
4.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55497.json"