CVE-2026-84372
CRLF injection in Predis pipeline allows injected Redis commands and disruption.
Is CVE-2026-84372 being exploited?
Not confirmed. CVE-2026-84372 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-84372?
CVE-2026-84372 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-84372?
Yes. A fix has been recorded for CVE-2026-84372. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84372 affect?
CVE-2026-84372 affects Predis PHP client v3.0.0-RC1 through v3.3.0, PHP apps using Predis pipeline() on Redis clusters/replicas, Redis clusters/replicas accessed by Predis. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-84372?
Upgrade Predis to v3.3.0 and avoid pipeline() with untrusted input.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
CRLF in keys/values during pipeline parsing allows injection of Redis commands: shard-wide deletes, data reads/modification, or node disruption; replication may crash requests.
Immediate action required
- affected>= 3.0.0-RC1 and < 3.3.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.