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CVE-2026-27654

CVE-2026-27654 · NGINX ngx_http_dav_module vulnerability

This page contains facts from public vulnerability sources. Check the original advisory before updating.

NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS 8.8 · High · EPSS 25.9% · Public exploit · Fix available

Published
Updated

Stack: system · web

Affected products and versions

  • nginx

    Versions
    • ≥ 1.29.0, < 1.29.7: Affected (semver)
    • ≥ 0.5.13, < 1.28.3: Affected (semver)

    Update to 1.28.3; Update to 1.29.7

  • nginx plus

    Versions
    • ≥ R36, < R36 P3: Affected (custom)
    • ≥ R35, < R35 P2: Affected (custom)
    • ≥ R34: Affected (custom)
    • ≥ R33: Affected (custom)
    • ≥ R32, < R32 P5: Affected (custom)

    No fix published

  • nginx Debian:12

    Versions
    • 1.22.1-9
    • 1.22.1-9+deb12u1
    • 1.22.1-9+deb12u2
    • 1.22.1-9+deb12u3
    • 1.22.1-9+deb12u4
    Affected ranges
    • ECOSYSTEM: < 1.22.1-9+deb12u5

    Update to 1.22.1-9+deb12u5

  • nginx Debian:13

    Versions
    • 1.26.3-3
    • 1.26.3-3+deb13u1
    • 1.26.3-3+deb13u2
    Affected ranges
    • ECOSYSTEM: < 1.26.3-3+deb13u3

    Update to 1.26.3-3+deb13u3

  • nginx Debian:14

    Versions
    • 1.26.3-3
    • 1.28.0-1
    • 1.28.0-2
    • 1.28.0-3
    • 1.28.0-4
    • 1.28.0-5
    • 1.28.0-6
    • 1.28.1-1
    • 1.28.1-2
    • 1.28.1-3
    • 1.28.2-1
    • 1.28.2-2
    • 1.28.2-3
    • 1.28.2-4
    Affected ranges
    • ECOSYSTEM: < 1.28.3-1

    Update to 1.28.3-1

  • nginx Ubuntu:Pro:14.04:LTS

    Versions
    • 1.4.1-3ubuntu1
    • 1.4.3-2ubuntu1
    • 1.4.4-1ubuntu1
    • 1.4.4-2ubuntu1
    • 1.4.4-4ubuntu1
    • 1.4.5-1ubuntu1
    • 1.4.6-1ubuntu2
    • 1.4.6-1ubuntu3
    • 1.4.6-1ubuntu3.1
    • 1.4.6-1ubuntu3.2
    • 1.4.6-1ubuntu3.3
    • 1.4.6-1ubuntu3.4
    • 1.4.6-1ubuntu3.5
    • 1.4.6-1ubuntu3.6
    • 1.4.6-1ubuntu3.7
    • 1.4.6-1ubuntu3.8
    • 1.4.6-1ubuntu3.9
    • 1.4.6-1ubuntu3.9+esm1
    • 1.4.6-1ubuntu3.9+esm2
    • 1.4.6-1ubuntu3.9+esm3
    • 1.4.6-1ubuntu3.9+esm4
    • 1.4.6-1ubuntu3.9+esm5
    Affected ranges
    • ECOSYSTEM: < 1.4.6-1ubuntu3.9+esm6

    Update to 1.4.6-1ubuntu3.9+esm6

  • nginx Ubuntu:Pro:16.04:LTS

    Versions
    • 1.9.3-1ubuntu1
    • 1.9.6-2ubuntu1
    • 1.9.6-2ubuntu2
    • 1.9.9-0ubuntu1
    • 1.9.9-1ubuntu1
    • 1.9.10-0ubuntu1
    • 1.9.10-1ubuntu1
    • 1.9.11-0ubuntu1
    • 1.9.11-0ubuntu2
    • 1.9.12-0ubuntu1
    • 1.9.13-0ubuntu1
    • 1.9.14-0ubuntu1
    • 1.9.15-0ubuntu1
    • 1.10.0-0ubuntu0.16.04.1
    • 1.10.0-0ubuntu0.16.04.2
    • 1.10.0-0ubuntu0.16.04.3
    • 1.10.0-0ubuntu0.16.04.4
    • 1.10.3-0ubuntu0.16.04.1
    • 1.10.3-0ubuntu0.16.04.2
    • 1.10.3-0ubuntu0.16.04.3
    • 1.10.3-0ubuntu0.16.04.4
    • 1.10.3-0ubuntu0.16.04.5
    • 1.10.3-0ubuntu0.16.04.5+esm1
    • 1.10.3-0ubuntu0.16.04.5+esm2
    • 1.10.3-0ubuntu0.16.04.5+esm3
    • 1.10.3-0ubuntu0.16.04.5+esm4
    • 1.10.3-0ubuntu0.16.04.5+esm5
    • 1.10.3-0ubuntu0.16.04.5+esm6
    Affected ranges
    • ECOSYSTEM: < 1.10.3-0ubuntu0.16.04.5+esm7

    Update to 1.10.3-0ubuntu0.16.04.5+esm7

  • nginx Ubuntu:Pro:18.04:LTS

    Versions
    • 1.12.1-0ubuntu2
    • 1.13.6-2ubuntu1
    • 1.13.6-2ubuntu2
    • 1.13.10-1ubuntu1
    • 1.13.12-0ubuntu1
    • 1.14.0-0ubuntu1
    • 1.14.0-0ubuntu1.1
    • 1.14.0-0ubuntu1.2
    • 1.14.0-0ubuntu1.3
    • 1.14.0-0ubuntu1.4
    • 1.14.0-0ubuntu1.5
    • 1.14.0-0ubuntu1.6
    • 1.14.0-0ubuntu1.7
    • 1.14.0-0ubuntu1.9
    • 1.14.0-0ubuntu1.10
    • 1.14.0-0ubuntu1.11
    • 1.14.0-0ubuntu1.11+esm1
    Affected ranges
    • ECOSYSTEM: < 1.14.0-0ubuntu1.11+esm2

    Update to 1.14.0-0ubuntu1.11+esm2

  • nginx Ubuntu:Pro:20.04:LTS

    Versions
    • 1.16.1-0ubuntu2
    • 1.16.1-0ubuntu3
    • 1.17.5-0ubuntu1
    • 1.17.6-0ubuntu1
    • 1.17.7-0ubuntu1
    • 1.17.8-0ubuntu1
    • 1.17.8-0ubuntu2
    • 1.17.8-0ubuntu3
    • 1.17.9-0ubuntu1
    • 1.17.9-0ubuntu2
    • 1.17.9-0ubuntu3
    • 1.17.10-0ubuntu1
    • 1.18.0-0ubuntu1
    • 1.18.0-0ubuntu1.2
    • 1.18.0-0ubuntu1.3
    • 1.18.0-0ubuntu1.4
    • 1.18.0-0ubuntu1.5
    • 1.18.0-0ubuntu1.6
    • 1.18.0-0ubuntu1.7
    Affected ranges
    • ECOSYSTEM: < 1.18.0-0ubuntu1.7+esm1

    Update to 1.18.0-0ubuntu1.7+esm1

  • nginx Ubuntu:22.04:LTS

    Versions
    • 1.18.0-6ubuntu11
    • 1.18.0-6ubuntu12
    • 1.18.0-6ubuntu14
    • 1.18.0-6ubuntu14.1
    • 1.18.0-6ubuntu14.2
    • 1.18.0-6ubuntu14.3
    • 1.18.0-6ubuntu14.4
    • 1.18.0-6ubuntu14.5
    • 1.18.0-6ubuntu14.6
    • 1.18.0-6ubuntu14.7
    • 1.18.0-6ubuntu14.8
    Affected ranges
    • ECOSYSTEM: < 1.18.0-6ubuntu14.10

    Update to 1.18.0-6ubuntu14.10

  • nginx Ubuntu:24.04:LTS

    Versions
    • 1.24.0-1ubuntu1
    • 1.24.0-2ubuntu1
    • 1.24.0-2ubuntu2
    • 1.24.0-2ubuntu3
    • 1.24.0-2ubuntu4
    • 1.24.0-2ubuntu6
    • 1.24.0-2ubuntu7
    • 1.24.0-2ubuntu7.1
    • 1.24.0-2ubuntu7.3
    • 1.24.0-2ubuntu7.4
    • 1.24.0-2ubuntu7.5
    • 1.24.0-2ubuntu7.6
    Affected ranges
    • ECOSYSTEM: < 1.24.0-2ubuntu7.7

    Update to 1.24.0-2ubuntu7.7

  • nginx Ubuntu:25.10

    Versions
    • 1.26.3-2ubuntu1
    • 1.26.3-3ubuntu1
    • 1.26.3-3ubuntu2
    • 1.26.3-3ubuntu3
    • 1.28.0-3ubuntu1
    • 1.28.0-4ubuntu1
    • 1.28.0-6ubuntu1
    • 1.28.0-6ubuntu1.1
    Affected ranges
    • ECOSYSTEM: < 1.28.0-6ubuntu1.2

    Update to 1.28.0-6ubuntu1.2

Original sources

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