CVE-2026-77071: n8n before 1.123.69, 2.33.4, and 2.34.1 contains a PostgREST filter injection vulnerability in the Supabase no

Q: How do I fix CVE-2026-77071?

n8n: upgrade to 1.123.69, 2.33.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-77071 being exploited?

CVE-2026-77071 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-2026-77071 affect?

CVE-2026-77071 affects n8n. Severity is critical (CVSS 9.8). n8n before 1.123.69, 2.33.4, and 2.34.1 contains a PostgREST filter injection vulnerability in the Supabase node's Row Get Many, Delete, and Update operations, which built filter queries by concatenating an expression-bindable value without

Q: How urgent is CVE-2026-77071?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-77071 is a critical-severity flaw (CVSS 9.8) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n before 1.123.69, 2.33.4, and 2.34.1 contains a PostgREST filter injection vulnerability in the Supabase node's Row Get Many, Delete, and Update operations, which built filter queries by concatenating an expression-bindable value without escaping. An attacker could inject a condition that widened the filter to match every row, turning an intended single-row operation into full-table disclosure, deletion, or modification.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-08-20
Last modified	2026-09-01

Publisher (CNA): VulnCheck · Vendor: n8n

Last updated 2026-09-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-20 12:16 UTCPublished CVE record published
2026-09-01 20:01 UTCUpdated Record last modified

n8n n8n UPGRADE

Affected: < 1.123.69 · >= 2.33.0 and < 2.33.4 · 2.34.0

Fixed in: 1.123.69, 2.33.4

Safe to downgrade to: a release before 2.33.0

1. Check installed version

npm ls n8n

2. UPGRADE to 1.123.69

npm install n8n@">=1.123.69"

3. If no update is available yet, DOWNGRADE to a release before 2.33.0

npm view n8n versions npm install n8n@"<2.33.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-77071?

n8n: upgrade to 1.123.69, 2.33.4. Exact commands for each OS are on this page.

Is CVE-2026-77071 being exploited?

CVE-2026-77071 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-2026-77071 affect?

CVE-2026-77071 affects n8n. Severity is critical (CVSS 9.8). n8n before 1.123.69, 2.33.4, and 2.34.1 contains a PostgREST filter injection vulnerability in the Supabase node's Row Get Many, Delete, and Update operations, which built filter queries by concatenating an expression-bindable value without

How urgent is CVE-2026-77071?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

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References

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