AEGLIX vulnerability intelligence
CVE-2026-109932
MEDIUM · CVSS 5.9 · Analyzed
Published: 2026-10-15 · Updated: 2026-10-19 · Source: NVD
Stored catalog record
Source record retrieved 2026-10-28T10:22:45.916723+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.
Vulnerability overview
undici is an HTTP client library for Node.js. In versions 5.15.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its WebSocket client, including the bundled WebSocket exposed by Node.js, can be driven to exhaust process memory by a malicious or compromised WebSocket server. For every PING frame received, the client automatically writes a PONG response and ignores the backpressure signal from the socket write, so a server that streams small PING frames while never reading the client's PONGs makes the outbound write queue and heap grow without bound until the Node.js process runs out of memory and terminates. The attack is remote and unauthenticated, needs only a normal WebSocket connection, and is asymmetric, since small inbound PINGs produce a much larger retained outbound queue, with availability the only impact. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, which pause WebSocket frame parsing when the automatic PONG response hits socket backpressure and resume on drain, bounding the outbound queue, and users should upgrade to one of those versions or later. There is no workaround.
Patch review priority
Assess exposure and vendor guidance
- No higher-priority signal is available in the current stored evidence.
FIRST EPSS: 0.32% · percentile 24.9 · score date 2026-10-27.
EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗
Severity and scoring
- CVSS score
- 5.9 · MEDIUM
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400, CWE-405, CWE-770
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Not listed in the CISA catalog retrieved for this record. This does not establish that exploitation has not occurred.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*
From (inclusive): 5.15.0
Before (exclusive): 6.29.1
cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*
From (inclusive): 7.0.0
Before (exclusive): 7.30.1
cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*
From (inclusive): 8.0.0
Before (exclusive): 8.12.2
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://cna.openjsf.org/security-advisories.html
Vendor Advisory
- https://github.com/nodejs/undici/security/advisories/GHSA-9fm3-97px-rjf6
Vendor Advisory