The Signal
Must Know
NASA/JPL spacecraft-command software vulnerability
What happened
AIT-GUI, the browser-based operator console in NASA/JPL’s open-source AMMOS Instrument Toolkit, had no authentication, authorization, session checks, or CSRF protection on state-changing endpoints. [1]
The vulnerability is tracked as GHSA-p9r8-2q67-fp86, rated Critical with CVSS 9.4, and fixed in AIT-GUI 2.5.2. [1]
Why it matters
Anyone who could reach the port could issue arbitrary commands through POST /cmd, run server-side scripts through POST /script/run, and execute command sequences through POST /seq. [1]
Postal Service mail-ballot regulations
What happened
USPS said it is finalizing regulations that would create federally defined eligibility lists for mail-in voting, pursuant to a March executive order. [2]
USPS said it would not implement the regulations until the Supreme Court rules, but must proceed now to have them ready for the 2026 general election. [2]
Why it matters
Multiple lower courts have struck down or blocked the USPS rules, and a Massachusetts judge separately enjoined them; the timing and scope of any Supreme Court ruling remain unclear. [2]