Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.3.0 and 7.0.0-alpha03, ByteArrayProtoReader32.skipGroup() and ProtoReader.skipGroup() in wire-runtime do not validate that a LENGTH_DELIMITED field length is non-negative before skip(), allowing a crafted protobuf varint encoding -128 as a signed Int to make skip(-128) move the internal position negative and make the next readByte() throw ArrayIndexOutOfBoundsException instead of the documented IOException or ProtocolException, which can crash services using ProtoAdapter.decode(byte[]) on untrusted payloads. This issue is fixed in versions 6.3.0 and 7.0.0-alpha03.
CVE-2026-45799
“—” beside the score: it is equal to the CVSS score beside it.
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-19. A secondary CVSS source baseline 7.5; sources differ by 0.0.
Also known asEUVD-2026-45301 (ENISA EUVD) · GHSA-7xpr-hc2w-34m9 (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 65EG Risk 65/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.7%
- EPSS %ILE
- 54th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
May 19, 2026
Last Modified
October 24, 2026
Advisory Details (5)
Auto-updated Jul 17, 2026skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service · Advisory · square/wire · GitHub
https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9Add negative-length check in skipGroup
Fix merged in square/wire PR #3597 on 2026-05-13 — awaiting tagged release
https://github.com/square/wire/pull/3597Add negative-length check in skipGroup
Fix merged in square/wire PR #3595 on 2026-05-12 — awaiting tagged release
https://github.com/square/wire/pull/3595commit e4e56fab38a5 (square/wire)
Fix landed in square/wire commit e4e56fab38a5 — awaiting tagged release
https://github.com/square/wire/commit/e4e56fab38a547d9625f05c97f1d8f0bcc3a5773commit 47d5b0dba539 (square/wire)
Fix landed in square/wire commit 47d5b0dba539 — awaiting tagged release
https://github.com/square/wire/commit/47d5b0dba53935d5332cd41a80a353b3fc90e7b0Vendor Advisories for CVE-2026-45799(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:70257Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.18 for Quarkus 3.33 update is now available (RHBQ 3.33.3.SP2)
- GHSA-7xpr-hc2w-34m9GitHub Security AdvisoriesHigh
Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service
Patch Availability(3)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | com.squareup.wire/wire-runtime-jvm:6.4.7 | 2026-09-22 | redhat |
| maven | com.squareup.wire:wire-runtime @ 6.3.0 (fixes <= 6.2.0) | — | ghsa |
| maven | com.squareup.wire:wire-runtime @ 7.0.0-alpha03 (fixes >= 7.0.0-alpha01, <= 7.0.0-alpha02) | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(2 across 1 ecosystem)
Maven(2)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| com.squareup.wire:wire-runtime | 7.0.0-alpha01, 7.0.0-alpha02 |
| — |
| com.squareup.wire:wire-runtime-jvm | 7.0.0-alpha01, 7.0.0-alpha02 |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 45× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 133 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 33 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.7% · 54th percentile
- 2026-11-01 07:48 UTCGHSA enrichmentGHSA-7xpr-hc2w-34m9 · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-11-01 07:48 UTCEG score recompute
- 2026-10-31 17:47 UTCEG score recompute
- 2026-10-31 17:47 UTCVendor advisory
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.7% · 54th percentile
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.7% · 54th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.7% · 54th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.7% · 54th percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-25 14:26 UTCEG score recompute
- 2026-10-24 20:27 UTCEG score recompute
- 2026-10-24 20:27 UTCVendor advisory
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-24 11:03 UTCEG score recompute
- 2026-10-24 11:03 UTCVendor advisory
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-18 03:37 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
Show 75 moreShow fewer
- 2026-10-17 13:35 UTCEG score recompute
- 2026-10-17 13:35 UTCVendor advisory
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-12 16:04 UTCEG score recompute
- 2026-10-11 19:46 UTCEG score recompute
- 2026-10-11 17:00 UTCEG score recompute
- 2026-10-11 14:26 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-30 03:39 UTCOSV refresh
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-11 05:53 UTCOSV refresh
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-23 17:00 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-21 23:36 UTCEG score recompute
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-20 19:00 UTCEG score recompute
- 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-16 16:56 UTCEG score recompute
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-16 03:33 UTCEG score recompute
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-15 03:24 UTCEG score recompute
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-14 02:06 UTCEG score recompute
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-08-12 14:38 UTCEG score recompute
- 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-08-11 13:53 UTCEG score recompute
- 2026-08-11 00:38 UTCEG score recompute
- 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-08-09 14:40 UTCEG score recompute
- 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 39th percentile
- 2026-08-09 02:22 UTCEG score recompute
- 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Related CVEs(same product + same vendor + same CWE)
Same product
2 shownMaven:com.squareup.wire:wire-runtime
Same vendor
10 shownredhat:RHSA-2026:70257
Frequently asked(5)
What is CVE-2026-45799?
When was the CVE record for CVE-2026-45799 published?
Is CVE-2026-45799 actively exploited?
What is the CVSS score of CVE-2026-45799?
How do I remediate CVE-2026-45799?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45799
Is Your Infrastructure Affected by CVE-2026-45799?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.