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In limbo for 8 days

GHSA-hqp2-7rr8-hf26

symfony/serializer on Packagist · published in symfony/symfony

Read the advisory on GitHub ↗

Fixed in 5.4.56. Dependabot, npm audit and OSV-Scanner won’t flag this yet. Find it in your project

Facts

Severity
Medium · CVSS score 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected versions (symfony/serializer)
>=5.4.41, <5.4.56As entered by the maintainer. Not reviewed.
Fixed in (symfony/serializer)
5.4.56
Affected versions (symfony/serializer)
>=6.4.9, <6.4.50As entered by the maintainer. Not reviewed.
Fixed in (symfony/serializer)
6.4.50
Affected versions (symfony/serializer)
>=7.0.9, <7.1.0As entered by the maintainer. Not reviewed.
Fixed in (symfony/serializer)
7.4.23
Affected versions (symfony/serializer)
>=7.1.2, <7.4.23As entered by the maintainer. Not reviewed.
Fixed in (symfony/serializer)
7.4.23
Affected versions (symfony/serializer)
>=8, <8.1.11As entered by the maintainer. Not reviewed.
Fixed in (symfony/serializer)
8.1.11
Affected versions (symfony/symfony)
>=5.4.41, <5.4.56As entered by the maintainer. Not reviewed.
Fixed in (symfony/symfony)
5.4.56
Affected versions (symfony/symfony)
>=6.4.9, <6.4.50As entered by the maintainer. Not reviewed.
Fixed in (symfony/symfony)
6.4.50
Affected versions (symfony/symfony)
>=7.0.9, <7.1.0As entered by the maintainer. Not reviewed.
Fixed in (symfony/symfony)
7.4.23
Affected versions (symfony/symfony)
>=7.1.2, <7.4.23As entered by the maintainer. Not reviewed.
Fixed in (symfony/symfony)
7.4.23
Affected versions (symfony/symfony)
>=8, <8.1.11As entered by the maintainer. Not reviewed.
Fixed in (symfony/symfony)
8.1.11
CVE
CVE-2026-122053 · published
GitHub Advisory Database
Not reviewed
OSV.dev
Not present
Other CVEs pointing here
None found in the CVE List

If you use symfony/serializer >=5.4.41, <5.4.56

Upgrade to 5.4.56 or later. Dependabot, npm audit and OSV-Scanner won’t flag this yet.

Timeline

  1. 2026-11-04 11:43 UTC

    Published by the maintainers

    Cites CVE-2026-122053

  2. 2026-11-07 10:14 UTC

    Change recorded

    new CVE from another CNA: CVE-2026-122053

  3. 2026-11-07 13:24 UTC

    Change recorded

    cites CVE-2026-122053 (was none)

  4. 2026-11-04 14:43 UTC

    First seen by Limbowatch

    not reviewed · not in OSV

  5. Waiting

    Reviewed by GitHub

  6. Waiting

    In OSV; scanners can see it

Machine-readable record: feed/GHSA-hqp2-7rr8-hf26.json