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Sound the depths of every vulnerability.

Newly released CVEs across every platform — sleek to read, verbose on demand, and served raw as markdown for AI and agent ingestion. Severity reads as depth: the deeper the contact, the graver the threat.

Browse the feed For agents → /llms.txt

Depth = severity + exploitation

HadalCritical and actively exploited (CISA KEV / 0day)
AbyssalCritical with a public exploit or in-the-wild use
MidnightCritical, or high with PoC / in-the-wild
TwilightHigh severity, or a signal on a lesser flaw
SunlitLow / medium · no exploitation signal

69319

Tracked CVEs

6432

Critical

702

Exploited in wild

4640

Last 7 days

Trending now

Bluesky + Hacker News mentions, last 7 days

1CVE-2026-109618Critical· 9.2RCE via OOM corruption4896
2CVE-2026-109619Critical· 9.2RCE via stale global state2196
3CVE-2026-111497Critical· 9.2Out-of-Bounds Write in Google Brotli Decoder1587
4CVE-2026-99999Critical· 9.3In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network hea…963
5CVE-2026-110264Critical· 10.0Integer Overflow or Wraparound in GitLab267
6CVE-2026-108707Critical· 9.8Wukong_HRM through commit 186115e contains an authentication bypass vulnerability in ParamAspect that allows unauthenticated attackers to call every HRM API endpoint by omitting the AUTH-TOKEN header266
7CVE-2026-91403Critical· 9.1Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE)262

This week's digest →All digests

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33 matches

CVE-2026-45078Medium· 5.5

5mo ago

Synapse CPU starvation (Denial of Service)

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.13%via OSV

CVE-2026-45076Medium

5mo ago

Synapse pagination Denial of Service

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.37%via OSV

CVE-2025-61672Medium

1y ago

Synapse is an open source Matrix homeserver implementation

Synapse is an open source Matrix homeserver implementation. Lack of validation for device keys in Synapse before 1.138.3 and in Synapse 1.139.0 allow an attacker registered on the victim homeserver to degrade federation functionality, un…

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.47%via NVD

CVE-2025-30355High· 7.1

1y ago

Synapse vulnerable to federation denial of service via malformed events

▾ Twilightmatrix-synapse · matrix-synapseEPSS 1.2%via OSV

CVE-2024-53863High

1y ago

Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders

▾ Twilightmatrix-synapse · matrix-synapseEPSS 0.61%via OSV

CVE-2024-52805High

1y ago

matrix-synapse vulnerable to denial of service due to malicious server ACL events

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 1.4%via OSV

CVE-2023-42453Low· 3.1

3y ago

matrix-synapse vulnerable to improper validation of receipts allows forged read receipts

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.78%via OSV

CVE-2023-41335Low· 3.7

3y ago

matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.39%via OSV

CVE-2023-32682Medium· 5.4

3y ago

Synapse has improper checks for deactivated users during login

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.75%via OSV

CVE-2018-10657High· 7.5⚠ Exploited0day

4y ago

Matrix Synapse DoS

▾ Abyssalmatrix-synapse · matrix-synapseEPSS 1.5%via OSV

CVE-2018-12291High· 7.5

4y ago

Matrix Synapse Security Filtering Flaw

▾ Twilightmatrix-synapse · matrix-synapseEPSS 1.8%via OSV

CVE-2018-16515High· 8.8

4y ago

Matrix Synapse Improper Signature Validation

▾ Twilightmatrix-synapse · matrix-synapseEPSS 1.5%via OSV

CVE-2018-12423High· 7.5

4y ago

Matrix Synapse Authorization Error

▾ Twilightmatrix-synapse · matrix-synapseEPSS 1.8%via OSV

CVE-2022-41952Medium· 5.3

4y ago

Uncontrolled Resource Consumption in Matrix Synapse

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.91%via OSV

CVE-2021-41281High· 7.5

4y ago

Path traversal in Matrix Synapse

▾ Twilightmatrix-synapse · matrix-synapseEPSS 1.6%via OSV

CVE-2021-39163Low· 3.1

5y ago

Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 0.90%via OSV

CVE-2021-39164Low· 3.1

5y ago

Improper authorisation of members discloses room membership to non-members

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 1.5%via OSV

CVE-2021-29471Low· 3.7

5y ago

Denial of service attack via push rule patterns in matrix-synapse

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 1.6%via OSV

CVE-2021-21394Medium· 5.3

5y ago

Denial of service (via resource exhaustion) due to improper input validation on third-party identifier endpoints

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 1.5%via OSV

CVE-2021-21393Medium· 5.3

5y ago

Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints

▾ Sunlitmatrix-synapse · matrix-synapseEPSS 1.6%via OSV

From the blog

All posts →

Oct 27, 2026

VulnSea has moved to vulnsea.com (and what changed since September)

The beta is over. VulnSea now runs at vulnsea.com, every old beta link redirects to the same page, and your account, API keys and watchlists came with it. Plus a round of hardening, faster pages, and new request limits agents should know about.

Sep 8, 2026

What's new: open corpus, three new MCP tools, vendor advisories, package pages

A summary of everything that shipped over the last two weeks — the whole corpus is open, agents get change feeds, alias resolution and EPSS movers, and the data now includes CVE.org, vendor CSAF, aggregated exploits and per-source scores.

Jul 1, 2026

Wiring VulnSea into an agent: a hands-on tutorial

A step-by-step guide to plugging VulnSea into automated and agentic workflows — poll the delta, triage without burning tokens, match an SBOM, and let an MCP-native model do the reasoning.

Sound the depths of every vulnerability.

Trending now

Feed

Synapse CPU starvation (Denial of Service)

Synapse pagination Denial of Service

Synapse is an open source Matrix homeserver implementation

Synapse vulnerable to federation denial of service via malformed events

Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders

Synapse allows unsupported content types to lead to memory exhaustion

Synapse allows a a malformed invite to break the invitee's `/sync`

Synapse Matrix has a partial room state leak via Sliding Sync

Synapse V2 state resolution weakness allows Denial of Service (DoS)

Synapse vulnerable to leak of remote user device information

matrix-synapse vulnerable to denial of service due to malicious server ACL events

matrix-synapse vulnerable to improper validation of receipts allows forged read receipts

matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes

Synapse has improper checks for deactivated users during login

Matrix Synapse DoS

Matrix Synapse Security Filtering Flaw

Matrix Synapse Improper Signature Validation

Matrix Synapse Authorization Error

Uncontrolled Resource Consumption in Matrix Synapse

Path traversal in Matrix Synapse

Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

Improper authorisation of members discloses room membership to non-members

Denial of service attack via push rule patterns in matrix-synapse

Denial of service (via resource exhaustion) due to improper input validation on third-party identifier endpoints

Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints

From the blog

VulnSea has moved to vulnsea.com (and what changed since September)

What's new: open corpus, three new MCP tools, vendor advisories, package pages

Wiring VulnSea into an agent: a hands-on tutorial

Sound the depths of every vulnerability.

Trending now

Feed

Synapse CPU starvation (Denial of Service)

Synapse pagination Denial of Service

Synapse is an open source Matrix homeserver implementation

Synapse vulnerable to federation denial of service via malformed events

Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders

Synapse allows unsupported content types to lead to memory exhaustion

Synapse allows a a malformed invite to break the invitee's `/sync`

Synapse Matrix has a partial room state leak via Sliding Sync

Synapse V2 state resolution weakness allows Denial of Service (DoS)

Synapse vulnerable to leak of remote user device information

matrix-synapse vulnerable to denial of service due to malicious server ACL events

matrix-synapse vulnerable to improper validation of receipts allows forged read receipts

matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes

Synapse has improper checks for deactivated users during login

Matrix Synapse DoS

Matrix Synapse Security Filtering Flaw

Matrix Synapse Improper Signature Validation

Matrix Synapse Authorization Error

Uncontrolled Resource Consumption in Matrix Synapse

Path traversal in Matrix Synapse

Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

Improper authorisation of members discloses room membership to non-members

Denial of service attack via push rule patterns in matrix-synapse

Denial of service (via resource exhaustion) due to improper input validation on third-party identifier endpoints

Denial of service (via resource exhaustion) due to improper input validation on groups/communities endpoints

From the blog

VulnSea has moved to vulnsea.com (and what changed since September)

What's new: open corpus, three new MCP tools, vendor advisories, package pages

Wiring VulnSea into an agent: a hands-on tutorial