EUVD-2026-69701
GHSA-w6f5-v2h6-g786
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Network-reachable via app input and unauthenticated, but AC:H reflects the required cluster/replication + pipeline() config plus unsanitized CRLF data flow; cluster impact is full C/I/A.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
5DescriptionCVE.org
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.
Articles & Coverage 1
AnalysisAI
RESP protocol command injection in Predis, the popular PHP client for Redis and Valkey, affects versions 3.0.0-RC1 through 3.2.x when pipeline() is used over aggregate cluster or replication connections. Because AbstractAggregateConnection::write() re-splits an already-serialized RESP buffer on CRLF instead of respecting RESP length prefixes, attacker-controlled keys or values containing carriage-return/line-feed bytes are re-parsed as additional Redis commands, enabling shard-wide cache deletion, targeted data reads/writes, or node disruption on clusters and denial-of-service on replication setups. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the target application to use an affected Predis version (3.0.0-RC1 to <3.3.0) configured with an aggregate connection - specifically 'cluster' or 'replication' mode - AND to send commands through the pipeline() API; transaction() and MULTI are explicitly not on the vulnerable path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The published CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H, 9.8) treats this as a trivially exploitable network-critical bug, but the real-world preconditions are narrower than that score implies and warrant scrutiny: exploitation only triggers when an application (1) runs an affected Predis version, (2) uses a cluster or replication (aggregate) connection, (3) issues commands via pipeline() specifically - transaction()/MULTI are unaffected - and (4) passes attacker-influenced data containing raw CRLF into command keys or values without sanitization. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade Predis to 3.3.0 or later (composer require predis/predis:^3.3.0), which refactors pipeline writing so aggregate connections serialize and write each command to its per-node connection individually (writeToMultiNode) instead of reparsing a concatenated buffer, per commit 053cb4b6ac7fb1f469ead96a78d059bc0458e408 and PR #1586. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all PHP applications deployed with Predis versions 3.0.0-RC1 through 3.2.x, prioritizing production systems on Redis/Valkey clusters or replication nodes. …
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