Security audit

islamic-inheritance-calculator

Security checks for vulnerabilities and agentic risk

Overview

This offline inheritance guide requests relevant information and contains no hidden execution, data-transfer, or account-access instructions.

Use anonymized family details where possible. Treat results as educational and confirm any actual distribution with a qualified scholar and an adviser familiar with local inheritance law.

A.I.G

Vulnerability Patterns

Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns

Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Memory PoisoningPersistent Context Injection, Context Window Stuffing, Memory Manipulation
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (12)

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 89)May include surrounding context.
md
"Descendant" below = a child or a son's child (any depth through males), male or female. A daughter's children are not "descendants" here (they are distant kindred). | Heir | Share | Condition | Evidence | | ------------------------------------------------------- | ------------------------------------- | --------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 91)May include surrounding context.
md
---------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Husband | 1/2 | no descendant | `[QURAN]` 4:12 | | Husband | 1/4 | with descendant | `[QURAN]` 4:12

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 92)May include surrounding context.
md
| `[QURAN]` 4:12 | | Husband | 1/4 | with descendant | `[QURAN]` 4:12 | | Wife (1-4 wives share equally) | 1/4 | no descendant | `[QURAN]` 4:12

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 93)May include surrounding context.
md
| `[QURAN]` 4:12 | | Wife (1-4 wives share equally) | 1/4 | no descendant | `[QURAN]` 4:12 | | Wife | 1/8 | with descendant | `[QURAN]` 4:12

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 94)May include surrounding context.
md
| `[QURAN]` 4:12 | | Wife | 1/8 | with descendant | `[QURAN]` 4:12 | | Father | 1/6 | with a male descendant | `[QURAN]` 4:11

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 95)May include surrounding context.
md
| `[QURAN]` 4:12 | | Father | 1/6 | with a male descendant | `[QURAN]` 4:11 | | Father | 1/6 + residue | with only female descendants | `[QURAN]` 4:11 + `[SAHIH HADITH]` "Give t

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 99)May include surrounding context.
md
s blocked) | `[QURAN]` 4:11; two siblings suffice: `[SAHABA]` majority, `[IJMA]` of later scholars (Ibn Abbas held three) | | Mother | 1/3 | no descendant, fewer than 2 siblings | `[QURAN]` 4:11 | | Mother | 1/3 of the remainder after the spouse | ONLY heirs are spouse + father + mother (Umariyyatan) | `[SAHABA]` ruling of Umar, agreed by Uthm

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 101)May include surrounding context.
md
| `[SAHABA]` ruling of Umar, agreed by Uthman, Zayd, Ibn Mas'ud; `[MADHHAB]` adopted by all four schools. Ibn Abbas gave 1/3 of the whole | | Daughter (1) | 1/2 | no son | `[QURAN]` 4:11 | | Daughters (2+) | 2/3 shared | no son | `[QURAN]` 4:11 (for "more than two"); two

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 103)May include surrounding context.
md
| `[QURAN]` 4:11 (for "more than two"); two daughters take 2/3 by `[HADITH]` the daughters of Sa'd ibn al-Rabi' (Abu Dawud 2891, Tirmidhi 2092, Ibn Majah 2720 - graded hasan by Tirmidhi and al-Albani, some graders weaken it), by analogy with two sisters in 4:176, and `[IJMA]` | | Daughter(s) with son(s) | residuary, male = 2 females | | `[QURAN]` 4:11 | | Son's daughter(s) | 1/2 (one) / 2/3 (2+) | no children of the deceased | `[IJMA]` (son's children stand in place o

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 106)May include surrounding context.
md
| `[SAHIH HADITH]` Ibn Mas'ud reporting the Prophet's ﷺ ruling (Bukhari 6736) | | Full sister (1) | 1/2 | no descendant male, no father (grandfather: see 7.3), no full brother, no daughter | `[QURAN]` 4:176 | | Full sisters (2+) | 2/3 shared | same conditions | `[QURAN]` 4:176

Context Window Stuffing

Medium

Category: Memory Poisoning
Confidence: 80% confidence
Finding: Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
Content: Scanner excerpt · SKILL.md (reported line 107)May include surrounding context.
md
| `[QURAN]` 4:176 | | Full sisters (2+) | 2/3 shared | same conditions | `[QURAN]` 4:176 | | Paternal half-sister(s) | 1/2 / 2/3 | as full sister, and no full sibling | `[QURAN]` 4:176; `[IJMA]` that 4:176 cover

Whitespace Padding

Medium

Category: Prompt Injection
Confidence: 70% confidence
Finding: Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
Content: Scanner excerpt · SKILL.md (reported line 105)May include surrounding context.
md
e none) | | Son's daughter(s) | 1/6 shared | with exactly ONE daughter and no son ("completing 2/3") | `[SAHIH HADITH]` Ibn Mas'ud reporting the Prophet's صلى lللo عليo وسلم ruling (Bukhari 6736) | | Full sister (1) | 1/2 | no descendant male, no father (grandfather: see 7.3), no full brother, no daughter | `[QURAN]` 4:176

Static analysis

No suspicious patterns detected.