CVE-2026-59902: netty Uncontrolled Resource Consumption
CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-59902DEBIAN-CVE-2026-59902CGA-2x8w-j4qw-cqqwCGA-362f-x7w6-vhr8CGA-3f67-h792-rxgqCGA-48xm-m4qp-h4xvCGA-55h4-3cc5-xc97CGA-58rm-4mqq-89v5CGA-5q73-wg2x-47gfCGA-65xg-qv38-x847CGA-886h-88f8-25w9CGA-8w5h-qpfw-qrxjCGA-9f3c-v2h6-f7xwCGA-9m7g-9x59-p95gCGA-9w45-8qmg-wr9cCGA-f223-5925-434cCGA-f2xw-xjvm-7c78CGA-g584-prqm-xg55CGA-p4cg-7hhw-59f3CGA-pgfr-8vp2-p389CGA-pp66-2f8w-rg6xCGA-q244-xq3x-94wjCGA-q83x-8222-j698CGA-qj58-3qw5-w5hcCGA-rfq9-r7f2-5gr8CGA-vc47-9p9q-438gCGA-vpp2-5hgj-8jv2CGA-x36g-mcxw-hpf4CGA-xgq6-89ch-v5qmCGA-265h-4wcp-4qj8CGA-2732-jp8r-xjvpCGA-2m4g-v8jr-m2gwCGA-2qg8-3m66-g633CGA-2rxj-q65v-5hxjCGA-2w54-grf7-5jv6CGA-2x9h-hqp6-87grCGA-2xvw-v5gr-4mhfCGA-3374-fjp6-7hx2CGA-3f9j-xcw8-2x58CGA-3jw6-rwj2-cc7pCGA-3rc9-567p-7jrhCGA-3rhc-p9gx-9f2gCGA-4347-xr4h-337xCGA-45qv-76hq-2p95CGA-49jm-qj3c-w76cCGA-4q75-j6pg-446pCGA-4vj7-www3-2v7vCGA-5x32-m36v-2772CGA-6v74-9p8x-v5c2CGA-732x-jp3w-xvhfCGA-8j4j-x24p-9m76CGA-9hjx-35w7-3xrvCGA-c4rj-6c76-39ccCGA-ch7v-v9mj-hh3pCGA-cjcg-84x8-qj4gCGA-f8hh-p4cx-2946CGA-ffr4-g2x3-chj7CGA-fgww-xp74-x4ppCGA-fjpx-j87v-hjhgCGA-fvpx-3q4w-qx4hCGA-g5pp-vqjg-7pg3CGA-g7w4-62r6-vp8cCGA-gm9x-x2mx-mw6gCGA-h5px-9vfp-v9fgCGA-h892-vp4x-667hCGA-j67p-jq32-7rg2CGA-jfrq-p2fw-3cwhCGA-jp54-m9xc-qqqwCGA-mrv7-7x45-m3j4GHSA-2qj4-mmr9-4v2fCGA-q93c-vr4w-797wCGA-qqf3-5jq3-9hfjCGA-r3mg-7phq-j9xhCGA-rh5g-9jf7-pvh7CGA-rp49-f92w-x66cCGA-rvw5-4ff8-qcgwCGA-v4px-xx33-3xvfCGA-vmxj-282r-wq3mCGA-vppf-6jx9-jpw8CGA-w775-w4qr-58g6CGA-w7fj-x7gf-42gcCGA-w8gf-352r-9mj9CGA-wc94-79p4-x3pvCGA-x3xj-cm3x-6225CGA-x4ch-3w65-3gwjCGA-x555-j2xv-2qgrCGA-x6gq-wpfg-38cfCGA-x8xq-mp97-c5hpCGA-x8xr-3j52-g74rCGA-xhvm-878p-5cc7
Published 17-08-2026Last modified 18-08-2026
Vulnerability summary
CVE-2026-59902 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in netty. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.8% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.36%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 3Timeline
- 17-08-2026PublishedVulnerability first disclosed.
- 18-08-2026Last modifiedVulnerability information updated.
Description
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
CVSS metrics
7 scores · 7 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 7 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.36%
Chance of exploitation in the next 30 days
Percentile
29%
Versus all other CVEs
30-day change
-0.01 pp
From 0.37% on 18-09-2026
18-09-202618-10-2026
EPSS score0.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard28 products
- apache-hop-fips< 2.19.0-r0
- celeborn-0.5< 0.5.4-r34
- celeborn-0.6< 0.6.3-r15
- gremlin-server< 3.8.1-r1
- hadoop-fips-3.3.6All versions (No fix recorded)
Wolfi16 products
- celeborn-0.6< 0.6.3-r15
- management-api-for-apache-cassandra-5.0< 0.1.124-r1
- tez< 0.10.5-r27
- thingsboard-tb-mqtt-transport< 4.3.1.3-r21
- thingsboard-tb-node< 4.3.1.3-r21
Debian1 product
- nettyAll versions (No fix recorded)
Io.netty1 product
- netty-transport-sctp≥ 4.2.0.Final, < 4.2.17.Final | < 4.1.137.Final
Netty1 product
- netty< 4.1.137.Final | ≥ 4.2.0.Final, < 4.2.17.Final | < 4.1.137 | ≥ 4.2.0, < 4.2.17
Ubuntu1 product
- nettyAll versions (No fix recorded)
6 vendors · 48 products
References
12 links- github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2fX Refsource CONFIRMAdvisoryWEBVendor Advisory
Show all 12 references
- github.com/netty/nettyPACKAGE