02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: sealfflate through 0.8.2 is vulnerable to denial of service via an infinite loop in unzipSync(). A crafted ZIP archive with a central directory entry declaring compressed_size=0xFFFFFFFF (ZIP64 sentinel)
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.- EPSS probability
- 0.28% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 19.7% of scored records. A rank, not a probability.
- NVD base score
- 6.6 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-08-19.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.2
- Published
- 2026-07-22 06:57Z1 MO AGO
- Last updated
- 2026-07-22 12:53Z1 MO AGO
- Reserved
- 2026-05-13
- Assigning CNA
- seal
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.6)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
- Weaknesses
- CWE-400Uncontrolled Resource ConsumptionClass
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.2
- Document digest
- 3321efbef4f3433b38f3ed47fbe096cbfcc889b0a6fb5c426c75ee139f390633
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
101arrowzfflate0.4.5 to 0.4.8, 0.5.0 to 0.5.3, 0.6.0 to 0.6.10, 0.7.0 to 0.7.4, 0.8.0 to 0.8.2Linux, macOS, Windows