CVE-2026-87776

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Source
https://cve.org/CVERecord?id=CVE-2026-87776
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87776.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-87776
Aliases
  • GHSA-vc2v-76pw-4v95
Downstream
Published
2026-09-11T11:24:55Z
Modified
2026-09-13T03:47:18Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
compression vulnerable to Denial of Service via memory leak on premature response close
Details

compression is a Node.js and Express compression middleware. In versions before 1.8.2, when a client aborts the connection while a compressed response is still being sent, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. A remote unauthenticated attacker can repeatedly open requests and disconnect early, exhausting the available memory and crashing the server. All applications using compression are affected. The issue is fixed in compression 1.8.2, and users should upgrade to 1.8.2 or later.

Database specific 
{
    "cna_assigner": "openjs",
    "cwe_ids": [
        "CWE-401",
        "CWE-459"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87776.json"
}
References

Affected packages

Git / github.com/expressjs/compression

Affected ranges

Type
GIT
Repo
https://github.com/expressjs/compression
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0f9707417bd53d41a319fce8bdb80dfa08b435c8
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.8.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

1.*
1.0.0
1.0.1
1.0.10
1.0.11
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9
1.1.0
1.1.1
1.1.2
1.2.0
1.2.1
1.2.2
1.3.0
1.3.1
1.4.0
1.4.1
1.4.2
1.4.3
1.4.4
1.5.0
1.5.1
1.5.2
1.6.0
1.6.1
1.6.2
1.7.0
1.7.1
1.7.2
1.7.3
1.7.4
1.7.5
1.8.0
v1.*
v1.8.0
v1.8.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87776.json"