Metrics
Affected Vendors & Products
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-g6x7-jq8p-6q9q | webtransport-go: Memory Exhaustion Attack due to Missing Length Check in WT_CLOSE_SESSION Capsule |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Thu, 12 Feb 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 12 Feb 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | webtransport-go is an implementation of the WebTransport protocol. From 0.3.0 to 0.9.0, an attacker can cause excessive memory consumption in webtransport-go's session implementation by sending a WT_CLOSE_SESSION capsule containing an excessively large Application Error Message. The implementation does not enforce the draft-mandated limit of 1024 bytes on this field, allowing a peer to send an arbitrarily large message payload that is fully read and stored in memory. This allows an attacker to consume an arbitrary amount of memory. The attacker must transmit the full payload to achieve the memory consumption, but the lack of any upper bound makes large-scale attacks feasible given sufficient bandwidth. This vulnerability is fixed in 0.10.0. | |
| Title | webtransport-go affected by Memory Exhaustion Attack due to Missing Length Check in WT_CLOSE_SESSION Capsule | |
| Weaknesses | CWE-770 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-02-12T18:45:58.158Z
Reserved: 2025-12-29T03:00:29.275Z
Link: CVE-2026-21434
Updated: 2026-02-12T18:45:53.125Z
Status : Received
Published: 2026-02-12T19:15:51.333
Modified: 2026-02-12T19:15:51.333
Link: CVE-2026-21434
No data.
OpenCVE Enrichment
No data.
Github GHSA