CVE-2026-84372

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 64% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Predis is a flexible and feature-complete Redis and Valkey client for PHP. From version 3.0.0-RC1 until version 3.3.0, pipeline handling on aggregate cluster and replication connections reparses an already serialized RESP buffer in AbstractAggregateConnection::write() by splitting it with explode("\r\n") instead of honoring RESP length prefixes. Attacker-controlled keys or values containing CRLF sequences can therefore be interpreted by Command::deserializeCommand() as additional commands. On cluster connections, ClusterStrategy::getFakeKey() can route injected keyless commands using the literal fake key value "key", permitting operations such as shard-wide cache deletion, targeted data modification, data reads, or node disruption. On replication connections, malformed reparsing can throw an uncaught exception and repeatedly terminate affected requests. Only pipeline() reaches this vulnerable path; transaction() and MULTI are not affected. This issue is fixed in version 3.3.0.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 9, 2026

Advisory Details (5)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_commit, github_pr.
github Patch Available🟡 PoC Available

Redis command injection and denial of service via CRLF smuggling in pipelined commands on aggregate connections · Advisory · predis/predis · GitHub

https://github.com/predis/predis/security/advisories/GHSA-w6f5-v2h6-g786
generic

Fatal Error with Pipeline and Replication when values contain `\r\n` characters · Issue #1574 · predis/predis · GitHub

https://github.com/predis/predis/issues/1574
github_release Patch Available

v3.3.0

Patch available: predis/predis v3.3.0

https://github.com/predis/predis/releases/tag/v3.3.0
github_pr Patch Available

Refactor pipeline data writing depends on connection type

Patch available: predis/predis v3.3.0 (PR #1586 merged 2025-08-13)

https://github.com/predis/predis/pull/1586
github_commit Patch Available

commit 053cb4b6ac7f (predis/predis)

Patch available: predis/predis v3.3.0 (contains commit 053cb4b6ac7f)

https://github.com/predis/predis/commit/053cb4b6ac7fb1f469ead96a78d059bc0458e408

Vendor Advisories for CVE-2026-84372(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
predis/predisv3.0.0, v3.0.0-RC1, v3.0.1, v3.1.0, v3.2.03.3.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 21:25 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 20:40 UTCEG score recompute
  4. 2026-09-17 19:32 UTCEPSS rescore
  5. 2026-09-16 18:38 UTCEG score recompute
  6. 2026-09-16 14:09 UTCEPSS rescore
  7. 2026-09-16 05:35 UTCEG score recompute
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 05:35 UTCEG score recompute
  10. 2026-09-15 03:12 UTCEPSS rescore
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-13 17:04 UTCEG score recompute
  13. 2026-09-12 17:16 UTCEG score recompute
  14. 2026-09-11 17:26 UTCEG score recompute
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 12:55 UTCEG score recompute
  18. 2026-09-10 13:07 UTCEG score recompute
  19. 2026-09-08 23:18 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-07 19:57 UTCEG score recompute
  22. 2026-09-06 15:56 UTCEG score recompute
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-05 16:06 UTCEG score recompute
  25. 2026-09-05 15:31 UTCEPSS rescore
Show 10 more
  1. 2026-09-04 16:12 UTCEG score recompute
  2. 2026-09-04 08:15 UTCEG score recompute
  3. 2026-09-04 05:07 UTCEPSS rescore
  4. 2026-09-02 20:22 UTCEG score recompute
  5. 2026-09-02 19:28 UTCEG score recompute
  6. 2026-09-02 14:15 UTCEG score recompute
  7. 2026-09-02 14:12 UTCEPSS rescore
  8. 2026-09-01 22:19 UTCEG score recompute
  9. 2026-09-01 21:23 UTCEG score recompute
  10. 2026-09-01 21:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-84372?
CVE-2026-84372 is a critical vulnerability published on September 1, 2026. Predis is a flexible and feature-complete Redis and Valkey client for PHP. From version 3.0.0-RC1 until version 3.3.0, pipeline handling on aggregate cluster and replication connections reparses an already serialized RESP buffer in AbstractAggregateConnection::write() by splitting it with…
When was CVE-2026-84372 disclosed?
CVE-2026-84372 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84372 actively exploited?
CVE-2026-84372 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.5% of all scored CVEs.
What is the CVSS score of CVE-2026-84372?
CVE-2026-84372 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-84372?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84372, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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