CVE-2026-43967: Inefficient Algorithmic Complexity vulnerability in absinthe-graphql absinthe allows unauthenticated denial of

Q: How do I fix CVE-2026-43967?

absinthe: upgrade to 1.10.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-43967 being exploited?

CVE-2026-43967 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-43967 affect?

CVE-2026-43967 affects absinthe. Severity is high (CVSS 7.5). Inefficient Algorithmic Complexity vulnerability in absinthe-graphql absinthe allows unauthenticated denial of service via quadratic fragment-name uniqueness validation. 'Elixir.Absinthe.Phase.Document.Validation.UniqueFragmentNames':run/2

Q: How urgent is CVE-2026-43967?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-43967 is a high-severity flaw (CVSS 7.5) affecting absinthe. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Inefficient Algorithmic Complexity vulnerability in absinthe-graphql absinthe allows unauthenticated denial of service via quadratic fragment-name uniqueness validation. 'Elixir.Absinthe.Phase.Document.Validation.UniqueFragmentNames':run/2 iterates over all fragments and for each one calls duplicate?/2, which evaluates Enum.count(fragments, &(&1.name == name)) — a full linear scan of the fragment list. The result is O(N²) comparisons per documen

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-407
Published	2026-05-08
Last modified	2026-06-17

Publisher (CNA): EEF · Vendor: absinthe-graphql

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 16:16 UTCPublished CVE record published
2026-06-17 10:50 UTCUpdated Record last modified

absinthe-graphql absinthe UPGRADE

Affected: > 1.2.0 and < 1.10.2

Fixed in: 1.10.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy absinthe || rpm -q absinthe || absinthe --version

2. UPGRADE to 1.10.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade absinthe

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade absinthe

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-43967?

absinthe: upgrade to 1.10.2. Exact commands for each OS are on this page.

Is CVE-2026-43967 being exploited?

CVE-2026-43967 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-43967 affect?

CVE-2026-43967 affects absinthe. Severity is high (CVSS 7.5). Inefficient Algorithmic Complexity vulnerability in absinthe-graphql absinthe allows unauthenticated denial of service via quadratic fragment-name uniqueness validation. 'Elixir.Absinthe.Phase.Document.Validation.UniqueFragmentNames':run/2

How urgent is CVE-2026-43967?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-42793 HIGH 7.5 UPGRADE Allocation of Resources Without Limits or Throttling vulnerability in absinthe-graphql absinthe allows unauthe

References

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