76 Security bugs analyzed
61 Dev commits covered
29 WebKit CVEs covered
16 Weekly reports
216 Contributors

This week's picks

Of the 422 WebKit commits landed this week, we selected 15 for close analysis.

W33
August 15 - August 21, 2026

The detach that guarantees no compiled code survives missed one cache.

5 security 10 dev
Read this week's report →
Browse all reports →

CVE coverage

One report per CVE. If a CVE is assigned to a commit that wasn't analyzed in a weekly report, an additional report is published.

All CVE coverage →

Live activity

Security bug types · 15-week window

350 security fixes · browse all
UAF UAF: 89 89 Race Race: 40 40 AuthBypass AuthBypass: 34 34 OOB OOB: 33 33 TypeConfusion TypeConfusion: 32 32 CrossOrigin CrossOrigin: 31 31 LogicError LogicError: 30 30 Other Other: 17 17 IntegerOverflow IntegerOverflow: 13 13 UninitializedMemory UninitializedMemory: 11 11 MemoryCorruption MemoryCorruption: 10 10 SandboxEscape SandboxEscape: 8 8

Where bugs land · component × bug type

15-week window · darker = more fixes
UAFRaceAuthBypassOOBTypeConfusionCrossOriginLogicErrorOther WebCore56WebCore · UAF: 5622WebCore · Race: 22WebCore · AuthBypass: 012WebCore · OOB: 128WebCore · TypeConfusion: 818WebCore · CrossOrigin: 1810WebCore · LogicError: 104WebCore · Other: 4WebKit12WebKit · UAF: 129WebKit · Race: 934WebKit · AuthBypass: 341WebKit · OOB: 12WebKit · TypeConfusion: 212WebKit · CrossOrigin: 1211WebKit · LogicError: 114WebKit · Other: 4JSC18JSC · UAF: 187JSC · Race: 7JSC · AuthBypass: 010JSC · OOB: 1020JSC · TypeConfusion: 20JSC · CrossOrigin: 04JSC · LogicError: 45JSC · Other: 5PlatformPlatform · UAF: 0Platform · Race: 0Platform · AuthBypass: 0Platform · OOB: 0Platform · TypeConfusion: 0Platform · CrossOrigin: 0Platform · LogicError: 0Platform · Other: 0WTFWTF · UAF: 01WTF · Race: 1WTF · AuthBypass: 01WTF · OOB: 1WTF · TypeConfusion: 0WTF · CrossOrigin: 0WTF · LogicError: 0WTF · Other: 0Other3Other · UAF: 31Other · Race: 1Other · AuthBypass: 09Other · OOB: 92Other · TypeConfusion: 21Other · CrossOrigin: 15Other · LogicError: 54Other · Other: 4

Report activity — selectivity

Weekly picks Outlier (±1σ) Average: 1.8% of commits analyzed
W19 W19: 14 picks from 417 commits (3.4%) W20 W20: 16 picks from 423 commits (3.8%) W21: 6 picks from 423 commits (1.4%) W22: 9 picks from 480 commits (1.9%) W23: 8 picks from 484 commits (1.7%) W24: 7 picks from 397 commits (1.8%) W25: 6 picks from 393 commits (1.5%) W26: 8 picks from 557 commits (1.4%) W27: 6 picks from 447 commits (1.3%) W28: 5 picks from 488 commits (1.0%) W29: 5 picks from 468 commits (1.1%) W30 W30: 2 picks from 452 commits (0.4%) W31: 8 picks from 470 commits (1.7%) W32: 7 picks from 384 commits (1.8%) W33 W33: 15 picks from 422 commits (3.6%) 0919 0306613 Commits landed this week Picks

Commit activity

WebCoreWebKitJSCPlatformWTFOther Security · Hardening
W19 · WebCore: 164W19 · WebKit: 81W19 · JSC: 64W19 · Platform: 51W19 · WTF: 18W19 · Other: 39W19 · security: 4W19 · hardening: 6W20 · WebCore: 156W20 · WebKit: 60W20 · JSC: 56W20 · Platform: 26W20 · WTF: 13W20 · Other: 112W20 · security: 17W20 · hardening: 20W21 · WebCore: 202W21 · WebKit: 59W21 · JSC: 45W21 · Platform: 13W21 · WTF: 12W21 · Other: 92W21 · security: 42W21 · hardening: 9W22 · WebCore: 198W22 · WebKit: 87W22 · JSC: 67W22 · Platform: 14W22 · WTF: 9W22 · Other: 105W22 · security: 28W22 · hardening: 9W23 · WebCore: 202W23 · WebKit: 121W23 · JSC: 56W23 · Platform: 7W23 · WTF: 6W23 · Other: 92W23 · security: 36W23 · hardening: 8W24 · WebCore: 195W24 · WebKit: 73W24 · JSC: 53W24 · Platform: 12W24 · WTF: 3W24 · Other: 61W24 · security: 24W24 · hardening: 6W25 · WebCore: 162W25 · WebKit: 76W25 · JSC: 40W25 · Platform: 17W25 · WTF: 9W25 · Other: 89W25 · security: 6W25 · hardening: 10W26 · WebCore: 256W26 · WebKit: 119W26 · JSC: 70W26 · Platform: 9W26 · WTF: 11W26 · Other: 92W26 · security: 146W26 · hardening: 27W27 · WebCore: 170W27 · WebKit: 77W27 · JSC: 53W27 · Platform: 18W27 · WTF: 7W27 · Other: 122W27 · security: 9W27 · hardening: 7W28 · WebCore: 251W28 · WebKit: 66W28 · JSC: 53W28 · Platform: 11W28 · WTF: 22W28 · Other: 85W28 · security: 5W28 · hardening: 11W29 · WebCore: 208W29 · WebKit: 75W29 · JSC: 66W29 · Platform: 10W29 · WTF: 12W29 · Other: 97W29 · security: 5W29 · hardening: 6W30 · WebCore: 206W30 · WebKit: 103W30 · JSC: 51W30 · Platform: 6W30 · WTF: 14W30 · Other: 72W30 · security: 2W30 · hardening: 7W31 · WebCore: 186W31 · WebKit: 78W31 · JSC: 102W31 · Platform: 7W31 · WTF: 16W31 · Other: 81W31 · security: 8W31 · hardening: 9W32 · WebCore: 166W32 · WebKit: 55W32 · JSC: 75W32 · Platform: 8W32 · WTF: 11W32 · Other: 69W32 · security: 13W32 · hardening: 7W33 · WebCore: 186W33 · WebKit: 76W33 · JSC: 61W33 · Platform: 8W33 · WTF: 16W33 · Other: 75W33 · security: 5W33 · hardening: 3 0279557 W19W22W25W28W31W33