PolymarketCheck availabilityNo KYCVerified resolution dataWell calibratedData quality warningStale data
Data as of Oct 26, 2026, 9:52 AM UTC · policy pm-quality-4
Selected book midpoint
December 31 · —
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Stored reference
December 31 89%
December 31 89%Market quality
59 / 100
Medium quality24h Volume
$5.1K
Liquidity
$35.8K
High liquidityOpen interest
$3.6K
Bid / Ask
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December 31Spread
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Comments
0
Market data
Updated 1 hour ago
LaggingOct 21, 26, 4:00 PM UTCJan 1, 27, 4:59 AM UTC
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Minimum order (shares):
- 5
- Tick size:
- 0.1 percentage points
- Fees:
- No
Top holders
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Market depth · December 31
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Related questions for context, not a comparison of equivalent contracts.
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PolymarketRules
This market will resolve to “Yes” if the US Cybersecurity and Infrastructure Security Agency (CISA) adds CVE-2026-109618 or CVE-2026-109619 (the critical PHP vulnerabilities known as “PHP2Shell”) to its Known Exploited Vulnerabilities (KEV) Catalog by the listed date, 11:59 PM ET.
- Otherwise, this market will resolve to “No”.
- The addition of either CVE will qualify.
- If either CVE has already been added to the KEV Catalog at the time this market is created, this market will resolve to “Yes”.
- The “Date Added” shown for the relevant entry in the KEV Catalog will be used to determine whether the addition occurred within this market's timeframe.
- The primary resolution source for this market will be CISA's Known Exploited Vulnerabilities Catalog (https://www.cisa.gov/known-exploited-vulnerabilities-catalog); however, official CISA announcements and a consensus of credible reporting may also be used.