CVE-2026-54426 (GCVE-0-2026-54426)
Vulnerability from cvelistv5 – Published: 2026-10-21 11:32 – Updated: 2026-10-21 11:32
VLAI
EPSS
VEX
Title
Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser
Summary
Uncontrolled recursion in the Redis reply parser in Apache bRPC < 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit.
Affected Scenarios:
Applications using bRPC as a Redis client with ChannelOptions.protocol="redis" and receiving replies from an untrusted or faulty Redis server peer.
How to Fix:
1. Upgrade Apache bRPC to 1.18.0.
2. Apply the patch from PR https://github.com/apache/brpc/pull/3344 .
Note:
After applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected.
Severity
No CVSS data available.
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/2pf15ojj0vr7rtx95… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache bRPC |
Affected:
0 , < 1.18.0
(semver)
|
guessed |
{
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://github.com",
"defaultStatus": "unaffected",
"packageName": "apache/brpc",
"packageURL": "pkg:github/apache/brpc",
"product": "Apache bRPC",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "1.18.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Nikko Enggaliano Pratama (nikkoenggaliano@gmail.com) on Github"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Uncontrolled recursion in the Redis reply parser in Apache bRPC \u0026lt; 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit.\u0026nbsp;\u003cbr\u003e\u003cbr\u003eAffected Scenarios:\u003cbr\u003eApplications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.\u003cbr\u003e\u003cbr\u003eHow to Fix:\u003cbr\u003e1. Upgrade Apache bRPC to 1.18.0.\u003cbr\u003e2. Apply the patch from PR \u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/apache/brpc/pull/3344\"\u003ehttps://github.com/apache/brpc/pull/3344\u003c/a\u003e.\u003cbr\u003e\u003cbr\u003eNote:\u003cbr\u003eAfter applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected."
}
],
"value": "Uncontrolled recursion in the Redis reply parser in Apache bRPC \u003c 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit.\u00a0\n\nAffected Scenarios:\nApplications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.\n\nHow to Fix:\n1. Upgrade Apache bRPC to 1.18.0.\n2. Apply the patch from PR https://github.com/apache/brpc/pull/3344 .\n\nNote:\nAfter applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected."
}
],
"metrics": [
{
"other": {
"content": {
"text": "high"
},
"type": "Textual description of severity"
},
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-674",
"description": "CWE-674 Uncontrolled Recursion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-21T11:32:19.591Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2026-54426",
"datePublished": "2026-10-21T11:32:19.591Z",
"dateReserved": "2026-06-14T07:05:33.297Z",
"dateUpdated": "2026-10-21T11:32:19.591Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-54426",
"date": "2026-10-22",
"epss": "0.00159",
"percentile": "0.04629"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://github.com",
"defaultStatus": "unaffected",
"packageName": "apache/brpc",
"packageURL": "pkg:github/apache/brpc",
"product": "Apache bRPC",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThan": "1.18.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@apache.org"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Uncontrolled recursion in the Redis reply parser in Apache bRPC \u003c 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a configurable Redis reply depth limit with default value 128 and rejects replies exceeding that limit.\u00a0\n\nAffected Scenarios:\nApplications using bRPC as a Redis client with ChannelOptions.protocol=\"redis\" and receiving replies from an untrusted or faulty Redis server peer.\n\nHow to Fix:\n1. Upgrade Apache bRPC to 1.18.0.\n2. Apply the patch from PR https://github.com/apache/brpc/pull/3344 .\n\nNote:\nAfter applying the fix, Redis replies with array nesting deeper than redis_max_reply_depth are rejected."
}
],
"id": "CVE-2026-54426",
"lastModified": "2026-10-22T16:56:37.023",
"metrics": {},
"published": "2026-10-21T12:17:21.180",
"references": [
{
"source": "security@apache.org",
"url": "https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb"
}
],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-674"
}
],
"source": "security@apache.org",
"type": "Primary"
}
]
}
}
}
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.