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New vulnerabilities from CERTs, vendors, researchers and newsrooms in 180+ countries, checked automatically, with how widely each one is being exploited, warned about and covered.
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Vulnerabilities
Untrusted Sender DN Used as Format String in CMP Response Validation
What is it?
Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to `ERR_raise_data()`. Impact summary: A malicious or intercepted CMP endpoint can crash a CMP client that enforces an expected sender or uses a pinned server certificate whose subject becomes the default expected sender. CWE: CWE-134 (Use of Externally-Controlled Format String) Description: When validating a received CMP message, ossl_cmp_msg_check_update() converts the peer-supplied sender distinguished name with X509_NAME_oneline() and passes it directly as the format argument to ERR_raise_data(). Percent characters survive the conversion, so a sender DN such as "CN=%s%n" reaches BIO_vsnprintf() as an attacker-controlled format string with no matching variadic arguments. This path is only reached when the caller configures an expected sender or pins a server certificate, which is the normal configuration for a CMP client validating server responses. Since the attacker controls the format string but none of the variadic arguments, such specifiers as %s and %n dereference or write through unrelated stack contents and crash the client. The reliabl
Evidence
- ZDI-26-789: OpenSSL CMP Use of Externally-Controlled Format String Information Disclosure VulnerabilityZero Day Initiative · US · 22 h ago
Exploitation
- Public proof of concept
- Exploited in the wild
- Listed as known exploited
- CVSS
- 9.8
- EPSS
- 1.2%
- First seen
- 7 h ago
- Status
- confirmed
Sources
CERTs and cyber security agencies, national news outlets in every country we could find, vendor advisories, research blogs and the security press. Every source is polled on its own schedule, by RSS where possible and by headless browser where not. Broken feeds are repaired automatically; anything still failing is listed here.
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Pipeline, last 24 hours
How many articles each type of source produced, how many were read in full, and how many were linked to a vulnerability. “Unmatched” are articles that look like vulnerability news but couldn’t be linked; the reasons and examples show what to improve.
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Coverage
All sources
How it works
Vulnocalypse reads vulnerability registries, government CERTs, vendor advisories, research blogs and newsrooms around the clock, links everything that refers to the same vulnerability, and only shows what passes automated validation.
What gets into the feed
A vulnerability is admitted when it is corroborated, either through a published CVE record or through at least two independent organisations, and its impact score reaches 60 out of 100. Anything listed in a known-exploited catalogue is admitted regardless of score. Once admitted, an entry stays, so the feed never flickers.
Impact score
Up to 30 points for severity (CVSS, or inferred from the description when no score exists), 25 for exploitation, 15 for blast radius by product category (edge devices and identity systems score highest), 15 for attention from news, CERTs and researchers, 10 for EPSS exploitation probability, and 5 for pre-authentication. Every entry shows its breakdown.
Exploitation status
We only mark something exploited when there is a citable source: a KEV listing (CISA, VulnCheck or ENISA), a statement from the vendor or a government agency, CISA’s SSVC assessment, or at least two independent organisations reporting attacks with no later denial from the vendor. Phrases like “no evidence of exploitation” are detected and count against a claim.
Validation, without humans
Identifiers are checked against the CVE List; rejected or non-existent CVEs are dropped. Titles, vendors, products and CVSS come from the official record rather than from headlines. Wire stories syndicated across outlets are counted once. Roundups that list dozens of CVEs only count the ones they actually discuss. Reports without an identifier wait for corroboration and are merged into the right CVE once one is assigned. Every decision is logged and shown on each vulnerability’s page.
The Panic meter
Three numbers over the past 24 hours, counting only vulnerabilities first seen in the last 14 days: distinct researchers posting about them, distinct news organisations covering them, and distinct CERTs and agencies warning about them. Each is ranked against its own 90-day history, weighted 35% CERTs, 35% news and 30% researchers, and stretched so the top levels stay rare. Each day’s score is split across the vulnerabilities that caused it.
The outbreak map
The map shows two things for every country: how many national news outlets are covering new vulnerabilities, and whether the national CERT or cyber security agency has issued a warning. National outlets are read directly, through local-language Google News editions, and through GDELT, which attributes coverage in over 100 languages to its source country. International security press is left off the map so it shows national attention, not trade coverage. Replay the spread to watch a vulnerability travel from patient zero across the world.
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Use it from an AI agent
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https://vulnocalypse.com/mcpTools: get_feed, search_vulnerabilities, get_vulnerability, check_exposure (send the products you run and get back anything that affects them), get_panic and explain_panic_day. The JSON API is documented at /api/docs.