[backstage-goalie]

This PR contains the following updates:

Package	Change	Age	Confidence
compression	1.8.1 → 1.8.2

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Warning

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compression vulnerable to Denial of Service via memory leak on premature response close

CVE-2026-87776 / GHSA-vc2v-76pw-4v95

More information

Details

Impact

A vulnerability in compression < 1.8.2 allows an attacker to trigger a Denial of Service (DoS) by disconnecting while a compressed response is being sent. When the client aborts the connection before the response finishes, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. Repeated aborted requests can exhaust available memory. All applications using compression are affected.

Patches

Users should upgrade to 1.8.2.

Workarounds

None.

Severity

• CVSS Score: 7.5 / 10 (High)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

• https://github.com/expressjs/compression/security/advisories/GHSA-vc2v-76pw-4v95
• https://nvd.nist.gov/vuln/detail/CVE-2026-87776
• https://github.com/expressjs/compression/commit/151f63e91e1b64f8fb0b064e19321a4f28db6bff
• https://cna.openjsf.org/security-advisories.html
• https://github.com/expressjs/compression
• https://github.com/expressjs/compression/releases/tag/v1.8.2

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).

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Release Notes

expressjs/compression (compression)

v1.8.2

Compare Source

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• Fix CVE-2026-87776 (GHSA-vc2v-76pw-4v95)
• deps: add destroy@​1.2.0
• Match Cache-Control: no-transform directive case-insensitively

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