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CVE-2026-119414medium5.3

Bitwarden Server before 2026.10.1 Authorization Bypass via POST /api/ciphers/create

Impact

Bitwarden Server before 2026.10.1 has an authorization bypass vulnerability, allowing organization members to add ciphers to inaccessible collections via POST /api/ciphers/create. A nulled UserId is treated as administrative.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

bitwarden · VulnCheck

server

1 range
VulnCheck version evidence

Package identity

pkg:github/bitwarden/server

Identity supplied by VulnCheck. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 2026.10.1

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

Bitwarden Server before 2026.10.1 on Entity Framework backends contains an authorization bypass vulnerability that allows organization members to add ciphers to collections they cannot edit. Attackers can call POST /api/ciphers/create, where a nulled UserId is treated as administrative, to inject vault items synced to read-only or inaccessible collections' members.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119414

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-863 ↗

Incorrect Authorization

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*

Before: 2026.10.1

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:bitwarden:server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "2026.10.1"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes
  1. CVE · CVE-2026-119414

    Observed 2026-10-30T17:32:22.048Z · upstream updated 2026-10-30T16:37:45.394Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-30T16:37:32.248638Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

8 sources
github.com/bitwarden/server/commit/9030c42bf7d8f9ac2ff9fee85c39588d5eb81499
patchVulnCheck
github.com/bitwarden/server/pull/8482
patchVulnCheck
github.com/bitwarden/server/blob/v2026.10.0/src/Infrastructure.EntityFramework/Vault/Repositories/CipherRepository.cs
technical-descriptionVulnCheck
github.com/bitwarden/server/blob/v2026.10.0/src/Api/Vault/Controllers/CiphersController.cs
technical-descriptionVulnCheck
github.com/bitwarden/server/releases/tag/v2026.10.1
release-notesVulnCheck
abraxaslabs.tech/research/bitwarden-cipher-create-acl
third-party-advisoryVulnCheck
View 2 more references
github.com/bitwarden/server
productVulnCheck
www.vulncheck.com/advisories/bitwarden-server-before-2026.10.1-authorization-bypass-via-post-api-ciphers-create
third-party-advisoryVulnCheck