Loading vulnerability…
CVE-2026-42507 is an improper output-neutralization issue in Go's net/textproto package. When affected functions return an error, they include attacker-controlled input in the error text. Applications that print or log those returned errors can record untrusted content as if it were part of a legitimate error message, enabling misleading log or console output.
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.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
82 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced in a PhotonOS PHSA-2026-5_0-91-0960 Go package security advisory affecting VMware PhotonOS 5.0.
An input-injection vulnerability in Go's net/textproto package that can produce misleading error messages.
An input injection issue in Golang net/textproto that can produce misleading error messages.
A vulnerability in Go's net/textproto package that allows misleading error messages via input injection.
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.