Memory exhaustion in OpenTelemetry-cpp OTLP HTTP exporters
CVE-2026-44967 affects OpenTelemetry-cpp prior to 1.27.0. The OTLP HTTP exporters for traces, metrics, and logs read the entire HTTP response body into an in-memory byte vector without enforcing a maximum size. If the configured collector endpoint is attacker-controlled, or if an attacker can perform a man-in-the-middle attack on the exporter connection, the attacker can return an excessively large HTTP response that causes unbounded memory consumption in the exporting process. The issue is fixed in OpenTelemetry-cpp 1.27.0.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
10 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.